Combine first 10 ingredients in a large bowl; add chicken, tossing to coat. Heat a grill pan over medium-high heat. Coat pan with cooking spray. Add chicken to pan; cook 4 minutes. Turn chicken over; cook 6 minutes or until done.
This was 'okay' but nothing as spectacular as I was expecting. The flavoring was tasty where it cooked onto the surface of the meat, but mostly the meat was fairly bland. My biggest complaint, however, is the nutrition guidelines. The stated serving size shows 2 thighs, but the nutritional values shown for one serving are the equivalent of 1 thigh, not 2. Very misleading for those counting calories & grams!
Start by making the recipe as written (I leave the seeds in the jalapeno and use 1 teaspoon of cayenne for the red pepper) then add a tablespoon of minced garlic, fresh or jarred, and as much orange juice as the chicken is thick. Marinate in a single layer overnight and turn over in the morning. We use 6 thighs as we both can only eat one per serving then grill it over a charcoal grill with a little mesquite wood. Leftovers make excellent tacos with fresh minced onions, cilantro, lettuce, cheese etc.