Saute first 5 ingredients in butter until vegetables are crisp-tender. Stir in tomatoes, basil, salt, and crushed red pepper; set aside. Cook pasta according to package directions; drain. Combine pasta, vegetable mixture, and chicken in a large bowl; spoon mixture into an 11x7x1-1/2-inch baking dish. Combine whipping cream and cheeses in a medium saucepan; cook over low heat until cheese melts, stirring frequently. Pour sauce over pasta mixture. Bake, covered, at 350F for 40 to 45 minutes or until thoroughly heated. Makes 6-8 servings.