1. In a food processor bowl blend together brown sugar, catsup, worcestershire, garlic, onion, vinegar, cumin, cayenne, mustard, oregano, rosemary, thyme, salt, and pepper.
2. Season chicken as needed with salt and pepper. Bake chicken until 3/4 cooked. Then coat chicken with barbecue sauce; grill. Turn chicken over, coat with more sauce and continue cooking until the internal temperature is 165ºF(75ºC). Brush with extra sauce as desired.
3. Serve barbecued chicken with some simple tossed salads.