To prepare BBQ Chicken Mac and Cheese, follow these simple steps for a delicious dish:

1. Preheat Oven: Preheat your oven to 350°F (175°C).
2. Cook Pasta: In a large pot, bring salted water to a boil. Add the elbow macaroni and cook until al dente, according to package instructions. Drain and set aside.
3. Combine Chicken and BBQ Sauce: In a large bowl, mix the shredded chicken with the BBQ sauce. Ensure the chicken is thoroughly coated.
4. Make Cheese Sauce: In another large saucepan over medium heat, combine the cream cheese, milk, garlic powder, onion powder, salt, and pepper. Stir until the cream cheese melts and the mixture is smooth.
5. Add Cheeses: Gradually add both the sharp cheddar and mozzarella cheese into the saucepan, stirring until fully melted and creamy.
6. Combine Pasta and Sauce: Add the cooked, drained macaroni to the cheese sauce and mix until evenly coated.
7. Fold in Chicken Mixture: Gently fold the BBQ chicken mixture into the mac and cheese until well combined.
8. Prepare for Baking: Transfer the mac and cheese mixture into a greased 9×13 inch baking dish.
9. Prepare Breadcrumbs (if using): In a small bowl, combine breadcrumbs with melted butter. Sprinkle evenly over the top of the mac and cheese.
10. Bake: Place the dish in the oven and bake for 30-35 minutes until bubbly and golden brown on top.
11. Cool: Once done, remove the dish from the oven and let it cool for about 10-15 minutes.
12. Serve: Once cooled slightly, serve warm and enjoy!

Following these steps will ensure you create a BBQ Chicken Mac and Cheese that is not only hearty and flavorful but also visually appealing.