Broil chiles on foil-lined broiler pan for 10 to 14 minutes or until charred, turning once. Wrap in foil. Let stand for 5 minutes. Remove skin and seeds from chiles. Cut into strips. Place burgers on baking sheet. Sprinkle with pepper. Bake at 350°F for 8 minutes. Turn. Bake for 10 minutes more. Top with pepper strips and cheese. Bake for 1 to 2 minutes more or until cheese melts. Serve with salsa. Helpful Hints: Poblano (po BLAH no) peppers have long, irregular bell-pepper shapes and a deep green color. Their medium hotness and deep complex flavors make them perfect for roasting. Most groceries carry poblano peppers in their produce sections.