01 - Preheat oven to 375°F. Lightly grease a 9x13-inch baking dish.
02 - Bring a large pot of salted water to a boil. Cook ravioli according to package directions, usually 3-5 minutes. Drain well.
03 - In a large bowl, combine cooked ravioli, chicken, Alfredo sauce, milk, Italian seasoning, and black pepper. Mix gently to coat evenly.
04 - Transfer mixture to prepared baking dish. Sprinkle mozzarella and Parmesan cheese evenly over the top.
05 - Cover with foil and bake for 20 minutes.
06 - Remove foil and bake an additional 10-15 minutes until cheese is golden and bubbly. Let cool for 5 minutes before garnishing with chopped parsley and serving.