Preheat oven to 375 degrees Fahrenheit (190 degrees Celsius).
Prepare Alfredo sauce by melting butter in a saucepan over medium heat and sautéing garlic for 60 seconds.
Whisk in heavy cream, salt, pepper, and 0.5 cup Parmesan cheese; simmer until sauce thickens.
In a medium bowl, combine ricotta cheese, egg, and fresh parsley.
Spread 0.5 cup of Alfredo sauce across the bottom of a 9x13 inch baking pan.
Place a layer of noodles over the sauce, followed by a portion of the ricotta mixture, shredded chicken, Alfredo sauce, and mozzarella cheese.
Repeat layering process until ingredients are exhausted, finishing with a layer of mozzarella and remaining Parmesan cheese.
Bake for 40 minutes or until the cheese is golden brown and the internal temperature reaches 165 degrees Fahrenheit.
Allow the dish to rest for 10 to 15 minutes before slicing to ensure structural integrity.