This easy slow-cooker chicken can be used in many different ways. You can serve it over rice, use it to top a taco salad, as the stuffing for tacos, and more. 13 of 26 Repeat the same de-boning procedure for the duck. In a well ventilated area or with an exhaust fan on high, preheat a large cast-iron pan to very hot. Rub the boneless chicken and duck with olive oil.