COOK chicken, corn and salsa in skillet on medium heat 8 to 10 min. or until heated through, stirring occasionally.
SPREAD 2 tortillas with reduced-fat cream cheese; top with chicken mixture and remaining tortillas.
HEAT large skillet sprayed with cooking spray on medium heat. Add 1 quesadilla; cook 4 to 5 min. or until golden brown on both sides, turning after 2 to 3 min. Repeat with remaining quesadilla. Cut into wedges.