Pre-heat your oven to 425 degrees F.
On a large cookie sheet, arrange flatbreads so that they are not overlapping. Sprinkle mozzarella or cheddar cheese on top, and bake for about 5-10 minutes, or until flatbreads are heated through and cheese is melted.
While the flatbreads are warming up, make the Avocado drizzle by scooping the flesh of one avocado in your blender or food processor. Alternatively, you could use a hand mixer. Add in lime juice, sour cream, milk, salt and black pepper. Mix until all ingredients are incorporated and you have a smooth creamy consistency.
When the flatbreads are heated and the cheese has melted, top each with lettuce, tomato, crumbled bacon and a dash of dried oregano.
Top each BLT flatbread pizza with Avocado drizzle.
Serve immediately, and enjoy!