These grilled chicken and vegetable skewers are a perfect summer meal. Simply marinate chicken breast in a mixture of olive oil, lemon juice, garlic, and herbs for at least 30 minutes. Thread chicken and a variety of vegetables such as zucchini, bell peppers, and onions onto skewers and grill until chicken is cooked through and vegetables are tender. Serve with a side of brown rice or quinoa for a complete and healthy meal.