Quick Chicken Quesadilla with Cheese

Name: Quick Chicken Quesadilla with Cheese
Prep time: 10 min
Cook time: 15 min
Total time: 25 min
Yield: 2
Ingredients: 200 g chicken breasts; 2 tortillas; 125 g mozzarella; onion, as needed; oil, as needed; salt, as needed; pepper, as needed; BBQ sauce, as needed; butter, as needed; parsley, as needed; grated cheddar, as needed