Steps
1. In a bowl, combine the diced chicken, olive oil, garlic powder, salt, pepper, and chopped rosemary. Mix well and marinate for 15 minutes.
2. Preheat the grill or grill pan over medium heat.
3. Thread the marinated chicken and halved grapes onto the soaked skewers, alternating between chicken and grapes.
4. Grill the skewers for 10-12 minutes, turning occasionally, until the chicken is cooked through and has nice grill marks.
5. Remove from the grill and let rest for a few minutes before serving.