Preheat your oven to 375°F. Now, let’s prepare our baking dish! Grease a 9×13 inch baking dish lightly with cooking spray or butter. In a large mixing bowl, combine the cooked rotini pasta, the deliciously tender chicken, both jars of rich Alfredo sauce, and the garlic parmesan sauce. Do not forget to mix in half of the mozzarella cheese and half of the Parmesan cheese into this mouthwatering mixture. Season generously with salt and pepper to taste. Ah, the aroma of seasoning fills the air!