PREPARE Dinner as directed on package.
MEANWHILE, heat oil in large skillet on medium-high heat. Add chicken; cook and stir 5 min. or until lightly browned and cooked through. Reduce heat to medium; stir in tomatoes and soup. Cook 5 min., stirring occasionally.
ADD Dinner; stir until well blended. Sprinkle with cheese; cover. Cook 5 min. or until cheese is melted.