1. Spray large nonstick skillet with PAM® cooking spray. Add tortilla pieces and chicken; mix well. Cook over medium-high heat 5 min. or until hot, stirring frequently.
2. Combine undrained RO*TEL®, ROSARITA® Enchilada Sauce and HUNT'S® Tomato Sauce in medium bowl; pour over chicken mixture in skillet. Mix well. Sprinkle 1/2 c. cheese over chicken mixture. Cover skillet; cook 5 min. or until hot, stirring occasionally. Sprinkle with remaining 1/2 c. cheese. Serve immediately.