In a small bowl, toss the rotisserie chicken with the BBQ sauce.
Place a tortilla on the griddle or in the skillet. Sprinkle ¼ of the gouda over half of the tortilla (we are going to be folding it in half, so make sure all the toppings stay on one half of the tortilla).
Place ¼ of the BBQ chicken on top of the gouda.
Top the chicken and gouda with ¼ of the chopped banana peppers, ¼ of the red onion, and ¼ of the scallions.
Top with ¼ of the mozzarella.
Fold the tortilla in half to create a half-moon shape.
Flip and continue cooking until browned on both sides and the cheese is melted, about 2–3 minutes.
Repeat with the remaining tortillas and ingredients.