Preheat the oven to 400 degrees F.
Line a large baking sheet with aluminum foil or Parchment paper.
Mix the beef, BBQ sauce and two tablespoons of each kind of cheese together.
Place the pita rounds on the pan and spread ¼ cup of the mixture on each pita round.
Sprinkle one tablespoon of cheddar over the meat mixture followed by one tablespoon of the mozzarella.
Bake for 6-8 minutes or until the cheese is thoroughly melted. If you prefer a crispier crust, you can bake them right on the center oven rack. If you do this, check them after 5 minutes to make sure the bottom isn't getting too brown.