To make BBQ Chicken Mac and Cheese easily, follow these straightforward steps:

1. Preheat Oven: Preheat your oven to 350°F (175°C).
2. Cook Pasta: Bring a large pot of salted water to a boil. Add the elbow macaroni and cook until al dente. Drain and set aside.
3. Mix Chicken and BBQ Sauce: In a large bowl, combine the shredded chicken and BBQ sauce, mixing well to coat the chicken evenly.
4. Prepare Cheese Sauce: In a medium saucepan, whisk together the milk and cream cheese over medium heat until the cream cheese is melted and smooth. Stir in garlic powder, onion powder, salt, and pepper.
5. Combine Pasta and Cheese: Add the cooked pasta to the cheese sauce, mixing until well combined. Then fold in the BBQ chicken mixture, stirring until everything is evenly distributed.
6. Add Cheeses: Mix in the shredded cheddar and mozzarella cheeses, reserving a little cheese for topping.
7. Transfer to Baking Dish: Pour the mixture into a greased 9×13-inch baking dish, spreading it out evenly.
8. Prepare Topping: In a small bowl, mix the breadcrumbs with melted butter and the reserved cheese. Sprinkle this mixture over the top of the mac and cheese.
9. Bake: Place the baking dish in the preheated oven and bake for 25-30 minutes or until the cheese is melted and bubbly, and the top is golden brown.
10. Cool and Serve: Once done, allow the dish to cool for a few minutes before serving.