Reheating Instructions Best served immediately. Delicious with fried rice or stir fry veggies! If not serving immediately, store chicken and sauce in separate containers. Allow chicken to cool completely (or you can leave on countertop for up to 2 hours, lightly covered with foil if serving within 2 hours) before storing in the refrigerator. About 30 minutes before you plan to serve, spread chicken out on a baking sheet and heat in a 350 degree oven for 20 minutes or until warm and crisp. Meanwhile, heat sauce on medium low in a saucepan or microwave until hot. Toss chicken with sauce and serve immediately.