Preheat your oven to 375°F. Cook the pasta according to package instructions, then drain. If needed, shred cooked chicken and set it aside.
In a large bowl, combine Alfredo sauce, garlic powder, black pepper, and Italian seasoning. Stir in the shredded chicken and cooked pasta, ensuring everything is well coated.
Grease a baking dish with butter. Pour the pasta and chicken mixture into the dish, spreading it evenly. Sprinkle mozzarella and parmesan cheese over the top.
Bake for 25-30 minutes until the cheese is melted and bubbly. For another cheesy delight, check out these Cheesy Bacon Bites.