COOK pasta as directed on package.
MEANWHILE, place cream cheese spread in large skillet. Add milk; cook on medium heat 1 to 2 min. or until cream cheese is melted and mixture is well blended, stirring frequently. Add 1/4 cup of the Parmesan cheese, the spinach, dill and lemon peel; mix well.
DRAIN pasta. Add to cream cheese sauce; toss to coat. Serve topped with tomatoes and remaining 2 Tbsp. Parmesan cheese.