This creamy spaghetti squash with roasted chicken and tomatoes is a warm and comforting meal, packed with protein and nutrients. roasted spaghetti squash is tossed in a garlic and herb cheese before being topped with roasted chicken breast, tomatoes, red onion, and fresh mozzarella. this spaghetti squash is not your ordinary healthy meal: it has all of the flavors of a bruschetta or caprese salad as well as flavorful chicken breast. since the spaghetti squash, chicken, and vegetables all roast at the same temperature and time, this meal couldn't be easier to put together.