1. Rub both sides of chicken with Creole seasoning, and place in a large shallow dish. Cover and refrigerate at least 30 minutes.
2. Prepare grill.
3. Brush both sides of chicken evenly with oil. Place chicken on grill rack coated with cooking spray; grill, covered, 5 to 6 minutes on each side or until chicken is done.
4. Place 1 lettuce leaf in each pita half. Layer onion and next 3 ingredients evenly into pita halves. Cut chicken into strips, and arrange evenly over vegetables. Serve warm.
carbo rating: 18