Preheat the oven to 375°F. Place the cooked pasta and chicken in a 9x13 inch baking dish.
In a large skillet over medium-high heat, melt the butter and add the minced garlic. Slowly pour in the half and half, then sprinkle in the garlic parsley salt. Bring the sauce to a simmer while gently whisking.
Add the Parmesan cheese and continue to whisk until it completely melts.
Pour the sauce into the baking dish and toss the pasta, chicken, and sauce together.
Sprinkle the mozzarella cheese on top. Bake the chicken Alfredo uncovered for about 20 minutes until the sauce is bubbly and the cheese is melted and golden brown. Garnish with fresh herbs and enjoy!