In a food processor add Red Gold Ketchup, chipotle pepper, vinegar, piloncillo, honey, salt, onion powder, ground cumin, black pepper, and lime juice. Process until smooth. If the mixture is too thick thin with a little water. Pour half the marinade over chicken, cover a place in the fridge to marinate for at least 4 hours or overnight. Preheat grill pan or grill. Grill chicken, nesting with remaining marinade until fully cooked. Remove chicken from grill, allow to rest, slice, and serve warm.