In a small bowl, combine the lime juice, vinegar, olive oil, and cayenne pepper. Stir in the paprika, chili powder, onion powder, cayenne pepper, garlic powder, black pepper, and salt.
For 30 minutes, cover, stir in the chicken, and marinate.
Set the grill to medium-high heat.
Put a piece of chicken on each of the four skewers.
Grill for five minutes before turning and cooking for another 5 minutes. Serve.