Easy Slow Cooker Chicken Fajitas



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Easy Slow Cooker Chicken Fajitas- 4 ingredient chicken fajitas cook in the crock pot all day long to create a satisfying, delicious meal without much effort!

If you’ve been following CenterCutCook for any amount of time, you’ve probably already determined that I have a thing for fajitas. My love for fajitas all started when I came across a phenomenal marinade and posted about “The Best Fajitas” I had ever had in my life!

Slow cooker chicken fajitas 6

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My love for fajitas continued to grow when I tried a new recipe for Sizzling Chicken Fajitas that blew my socks off! My fajita love didn’t stop there though…. next I took that recipe and turned it into a not-to-be-missed version of Chicken Fajita Quesadillas. What can I say? I adore fajitas with tender spicy meat and veggies, topped with all of my favorite garnishes.

With cooler temperatures right around the corner in Chicago, I began to realize that it’d probably be in my best interest to come up with a way to enjoy fajitas without needing to fire up the grill in sub-zero temperatures. I debated between trying to make them in the oven or experimenting with my slow cooker. I am always looking for new chicken recipes and ways to use my crock pot, so naturally, I decided my slow cooker would be the best option here!

Slow cooker chicken fajitas collage

Chicken Fajita Ingredients

Part of what makes this such a great recipe is that the ingredients are simple and easy to keep on hand. Everything marinates in the slow cooker while the fajitas cook, getting the juiciest and best flavor! For the full recipe including all measurements, see the recipe card below.

  • Boneless skinless chicken breasts: Cut each breast in half length-wise (these are called chicken cutlets) to allow for quicker and more even cooking. You can get a pound of chicken cutlets from your butcher or meat counter that are already cut.
  • Bell peppers: I always opt for a green bell pepper and a red bell pepper, but any combination of bell peppers will work for fajitas. Try to cut the strips thinly and similar in size so they cook evenly.
  • Onion: Add a savory element to the fajitas.
  • Taco seasoning: Use a packet of taco seasoning or 1/4 cup (4 tablespoons) of my homemade taco seasoning.
  • Rotel: A can of diced tomatoes and green chilis with its juice adds flavor and some liquid to cook the fajita ingredients.

Homemade Taco Seasoning

I love making my own seasoning blends! Not only is it very cost-effective, but super easy. When you make your own taco seasoning, you have full control over the ingredients and can adjust the flavors to suit your taste preferences. You can customize the spice level, saltiness, and overall flavor profile to create a seasoning blend that perfectly complements your dishes and skip the added preservatives and sodium that can be found in store-bought packets.

plate of homemade taco seasoning ingredients
3.50 from 2 votes

Homemade Taco Seasoning

Homemade Taco Seasoning is comprised of 10 different spices and seasonings that you likely already have in your pantry!

How to Cook Chicken Fajitas in The Slow Cooker

The method is truly simple. Dump everything into the slow cooker, turn it on low, walk away and 8 hours later you have perfectly tender chicken fajitas! Here is a breakdown of how it comes together. Be sure to scroll to the recipe card at the bottom of the post for the full recipe.

  1. Add ingredients to the crockpot. Put your chicken cutlets in the crockpot and sprinkle them with a packet of taco seasoning. Then add a can of Ro*Tel and slices of red bell pepper, green bell pepper, and onions.
  2. Cook the fajitas. Cook the mixture on low for 7-8 hours or on high for four hours, or until the chicken is tender and fully cooked.
  3. Shred the chicken. Right before you’re ready to eat, remove the chicken from the slow cooker with a slotted spoon and use two forks to shred it. Once shredded, return it back to the slow cooker and stir it together with the veggies.
  4. Serve the fajitas. Because there will be so much liquid left in the slow cooker, use a slotted spoon to serve up the chicken and veggies so that you aren’t left with soggy tortillas. Enjoy in warm tortillas with your favorite fajita toppings.

How to Serve Fajitas

Serve the fajita mixture in warmed tortillas. Be sure to top these fajitas with shredded cheese, my homemade guacamole, and salsa! One bite of these tasty Easy Slow Cooker Chicken Fajitas will send you to fajita paradise. Make a batch of Instant Pot Cilantro Lime Rice to accompany them and round out the meal.

Storing and Reheating Leftovers

Remove any leftover chicken and veggies from the slow cooker with a slotted spoon and store them in an airtight container in the refrigerator for up to three days. You can discard the remaining liquid in the slow cooker. Reheat only the portion you plan to eat in the microwave or in a small skillet until heated through. Leftovers should never be reheated more than once.

Other Fajita Recipes

If you try this recipe for chicken fajitas or any of my other recipes, I’d love to know how you enjoy it. Hearing from you makes my day!

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Easy Slow Cooker Chicken Fajitas

Easy Slow Cooker Chicken Fajitas- 4 ingredient chicken fajitas slow cook in the crock pot all day long to create a satisfying, delicious meal without much effort!
Prep Time: 3 minutes
Cook Time: 7 hours
Total Time: 7 hours 3 minutes
Servings: 6


  • 1 pound boneless skinless chicken breasts
  • 1 medium yellow onion cut into slices
  • 1 large red bell pepper cut into thin strips
  • 1 large green bell pepper cut into thin strips
  • 1 can Rotel or diced tomatoes with green chiles
  • 1 packet taco seasoning or 1/4 cup homemade taco seasoning
  • tortillas plus choice of garnishes cheese, salsa, guacamole, sour cream, etc.


  • Place chicken breast halves (cut each large chicken breast in half length-wise) in the bottom of your slow cooker.
  • Sprinkle 1 packet or 1/4 cup of homemade taco seasoning over the chicken.
  • Top chicken with 1 can Ro*Tel and slices of red bell pepper, green bell pepper, and onions.
  • Cook on low for 7-8 hours or on high for 4 hours until chicken is tender.
  • When the chicken is cooked, remove it from the slow cooker and use two forks to shred it. Return the shredded chicken to the slow cooker and stir to combine. 
  • There will be a substantial amount of liquid in the slow cooker, so use a slotted spoon for serving to prevent your tortillas from getting soggy.
  • Place chicken and vegetable mixture on tortillas and top with garnishes of choice.
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Slow cooker chicken fajitas

Hi, I’m Ashley & I’m so happy you’re here!

Ashley is the founder of CenterCutCook and a former teacher that now spends her days in the kitchen so that she can share her favorite recipes with you!