HEAT dressing in large skillet on medium heat. Add chicken; cover. Cook 4 to 5 min. on each side or until lightly browned. Remove from skillet; cover to keep warm.
ADD peppers to skillet; cook 5 min., stirring frequently. Stir in tomatoes and salsa. Return chicken to skillet; simmer, covered, on medium-low heat 10 min. or until done (165ºF).
TOP with cheese; cook, covered, 4 to 5 min. or until melted. Serve over rice.