This Chicken Pot Pie Spaghetti Squash Casserole is a healthier twist on the classic comfort food. It features tender chicken, mixed vegetables, and a creamy sauce, all baked on a bed of spaghetti squash. The spaghetti squash replaces the traditional pie crust, making this dish low-carb and gluten-free. It's a satisfying and flavorful casserole that will warm you up on a chilly evening.