Preheat the oven to 350°F (175°C).
In a large mixing bowl, combine cooked pasta, shredded chicken, and Alfredo sauce.
Season with garlic powder, Italian seasoning, salt, and pepper.
Transfer the mixture to a greased baking dish.
Sprinkle mozzarella cheese evenly over the top.
Add grated Parmesan cheese for extra flavor.
Cover with aluminum foil and bake for 20 minutes.
Remove the foil and bake for an additional 10 minutes until the cheese is bubbly and golden.
Let it cool for a few minutes before serving.
Garnish with fresh parsley and enjoy!