Before You Begin:
Preheat and prepare your cookware as needed. Cooking times and results may vary depending on your oven, cookware, and ingredient thickness.
Preheat oven to 375°F (190°C). Grease a 9×13-inch dish.
Cook pasta until al dente; drain well.
Melt butter in a skillet. Add garlic and cook 1–2 minutes.
Add heavy cream; bring to a gentle simmer. Stir in Parmesan, seasoning, salt, and pepper.
Add cooked chicken and pasta to the sauce. Mix in 1 cup mozzarella.
Transfer to baking dish. Top with remaining mozzarella.
Bake 20–25 minutes until golden and bubbling.
Rest 5–10 minutes before serving. Garnish with parsley.