Preheat your oven to 350°F (175°C).
In a large mixing bowl, combine the cooked pasta, shredded chicken, and Alfredo sauce.
Add garlic powder, Italian seasoning, salt, and pepper to the mixture.
Stir until all ingredients are well combined.
Transfer the mixture to a greased baking dish.
Sprinkle mozzarella cheese evenly on top.
Add grated Parmesan cheese for extra flavor.
Bake in the preheated oven for 25-30 minutes until the cheese is bubbly and golden.
Remove from the oven and let it cool for a few minutes.
Garnish with fresh parsley before serving.