Skewers are a fun and easy way to use up leftover rotisserie chicken. Simply cut the chicken into bite-sized pieces and thread them onto skewers with some sliced bell peppers, onions, and zucchini. Brush the skewers with some olive oil and season with salt and pepper. Grill the skewers for about 10 minutes, or until the chicken is heated through and the vegetables are tender. Serve with some rice or a salad for a complete meal.