1. Preheat grill to 350° to 400° (medium-high) heat. Place chicken between 2 sheets of heavy-duty plastic wrap; flatten to 1/2-inch thickness using a rolling pin or flat side of a meat mallet.
2. Stir together brown sugar and Cajun seasoning; rub mixture over chicken. Grill chicken, covered with grill lid, 4 minutes on each side or until done. Season with salt to taste.
Caramelized Cajun Pork Chops: Substitute 4 (1/2-inch-thick) boneless pork loin chops for chicken breasts. Proceed with recipe as directed.