In a large nonstick skillet, cook beef and jalapeno over medium heat until meat is no longer pink; drain. Stir in the corn, tomatoes, milk, cornmeal, chilies, olives, egg whites and taco seasoning until blended.
Transfer to a 13x9-in. baking dish coated with cooking spray. Bake, uncovered, at 350° for 40 minutes. Sprinkle with cheese. Bake 5 minutes longer or until cheese is melted. Let stand for 10 minutes before cutting. Serve with salsa.
Wear disposable gloves when cutting hot peppers; the oils can burn skin. Avoid touching your face.