COMBINE first 5 ingredients; set aside.
HEAT large skillet sprayed with cooking spray on medium heat. Add corn and peppers; cook and stir 3 to 5 min. or until peppers are crisp-tender. Stir in shrimp mixture; cook 2 min. or until heated through, stirring frequently. Spoon onto tortillas; top with cheese. Fold in half.
WIPE out skillet with paper towels; spray with cooking spray. Add quesadillas, in batches; cook 3 to 4 min. or until golden brown on both sides, turning after 2 min.