Stovetop: Reheat chicken in a hot oiled skillet over medium heat until heated through. Oven: Preheat oven to 350 degrees F. Place pollo asado in an oven-safe dish or on a baking sheet and cover the dish or baking sheet with foil to prevent the chicken from drying out. Reheat the pollo asado in the oven for about 15-20 minutes. Microwave: Microwave leftovers in 30-second increments until warmed throughout.