POUR 1/4 cup of the dressing over chicken in resealable plastic bag. Seal bag; turn to evenly coat chicken with dressing. Refrigerate 30 min. to marinate. Remove chicken from marinade; discard bag and marinade.
PREHEAT grill to medium heat. Grill chicken 5 to 7 min. on each side or until cooked through (165°F). Cut into thin slices.
TOSS lettuce with remaining 1/4 cup dressing, chicken, croutons, bacon bits and cheese.