You can marinate the chicken before cooking. Place it in a ziplock bag in the fridge for a couple of hours. Be sure to cut the chicken beforehand to avoid a mess! While cooking the chicken on the skillet, stir continuously for 6-7 minutes making sure the meat is cooked thoroughly and no more pink is shown. check the pieces of meat with a meat thermometer periodically to monitor temps. 165 F is the safe temperature. Check several pieces. When the temperature gets close to 165 reduce heat and add the sauce and vegetables.