1Loosen skin from chicken by inserting fingers, gently pushing between skin and meat. Rub 3 tablespoons Rosemary-Garlic Rub evenly over breast meat. Place 1 rosemary sprig and 1 thyme sprig between the skinand meat of each breast half. Gently press skin to secure. Cover and refrigerate 4 hours.
2Prepare grill. Sprinkle chicken with pepper. Place chicken, skin side down, on grill rack coated with cooking spray. Grill 25 minutes or until done - turning occasionally. Discard skin before serving.
3To make Rosemary-Garlic Rub: Combine all ingredients. Store in refrigerator for up to 3 days.