These grilled chicken and sweet potato skewers are a hearty and flavorful meal. To make the marinade, combine garlic, rosemary, lemon juice, salt, and olive oil in a food processor. Pulse until smooth, then pour over the chicken and let it marinate for at least 30 minutes. Thread the chicken and sweet potato onto skewers, then grill for 10-12 minutes, turning occasionally, until the chicken is cooked through and the sweet potato is tender. Serve with a side of quinoa or brown rice.