Spray the unheated rack of a broiler pan with nonstick coating. Broil chicken 4 to 5-inches from the heat for 12 to 15 minutes or till no longer pink and juices run clear. Turn once.
If you cant find jicama, use more carrot and sweet pepper. To test for medium heat on the grill, you should be able to hold your hand over the heat at the height of the food for 3 to 4 seconds before you have to pull it away.