HEAT oil in large nonstick skillet on medium-high heat. Add chicken; cover. Cook 4 min. on each side or until cooked through.
REMOVE chicken from skillet; cover to keep warm. Add water and salsa to skillet; stir until well blended. Bring to boil.
STIR in rice and corn. Top with chicken; sprinkle with cheese. Reduce heat to low; cover. Cook 5 min. or until rice is tender.