frequently,until well browned on all sides and cooked through.Meanwhile,place tortilla chips in single layer on jelly-roll pan;bake 10 minutes until crisp and golden.Prepare Zesty Tomato Salsa.To serve:Spoon meatballs into center of large serving platter;sprinkle with remaining Monterey Jack and Cheddar cheese.Arrange tomato wedges and lettuce around meatballs if desired.Serve with tortilla chips and salsa.Makes 4 servings. ZESTY TOMATO SALSA: In a 2 qt. saucepan over medium high heat,heat 1 tbsp.vegetable oil; add 1 each red and green bell pepper,cored,seeded and diced (about 2 cups),1 medium size onion,diced (about 3/4 cup) and 1 large clove garlic,crushed. Cook about 10 minutes,stirring frequently,until tender.Stir in 2 large fresh,ripe tomatoes,diced (about 2 cups) and 1/4 to 1/2 tsp. hot red pepper sauce;cook 1 minute longer until heated through. Makes about 1 1/2 cups. ----