Preheat your oven to 375°F. Grease a 9×13 inch baking dish lightly with cooking spray or butter. In a large mixing bowl, combine the cooked pasta, chicken, Alfredo sauce, garlic parmesan sauce, half of the mozzarella cheese, and half of the Parmesan cheese. Season with salt and pepper to taste. Mix well. Add about 1/2 cup pasta water if needed for extra sauciness.

Next, transfer the delicious mixture to the prepared baking dish, spreading it evenly for even cooking. Now, sprinkle the remaining mozzarella and Parmesan cheese over the top. Cover the dish with aluminum foil and bake for 20-25 minutes, until the cheese is melted and bubbly. For a delightful golden top, feel free to broil for 2-3 minutes—just keep a watchful eye to avoid burning. Once done, allow the dish to cool for about 5 minutes. If you wish, garnish with chopped parsley before serving.