Preheat oven to 350 degrees F.
In a casserole dish, add cream cheese, chicken, half the mozzarella and cheddar, ranch dressing, Frank's Red Hot buffalo sauce, and ranch seasoning (no need to stir yet).
Bake for 15 minutes, then remove and stir to combine.
Top with remaining cheese and bake for another 15 minutes, or until the cheese is melted.
Garnish with chives or chopped green onion
Serve with your favorite dippers.