HEAT dressing in large nonstick skillet on medium-high heat. Add chicken; cook and stir 2 min.
STIR in rice, broth and peppers. Bring to boil; cover. Simmer on low heat 5 min. or until chicken is done and rice is tender. Let stand, covered, 5 min. or until liquid is absorbed.
ADD tomatoes, cheese and onions; mix lightly.