Meanwhile, heat large nonstick skillet sprayed with cooking spray on medium-high heat. Add chicken; cook 5 to 7 min. or until chicken is cooked through, stirring occasionally. Remove from skillet. Mix broth and flour in same skillet. Stir in cream cheese product, 2 Tbsp. of the Parmesan cheese, the nutmeg and pepper; cook 2 min., stirring constantly until mixture boils and thickens. Stir in chicken.