If you don't already have cooked chicken on hand and want to cook some to go with your tortellini alfredo, our favorite method for this dish is to use small chicken breasts (or slice two large ones in half horizontally) and season them with kosher salt, black pepper, and a sprinkle of garlic powder. Heat a tablespoon or two of olive oil in a large skillet over medium-high heat, then cook the chicken for 3-5 minutes on each side until it reaches 165 degrees F when tested with a digital meat thermometer. Let rest for 5 minutes before slicing.