In a large bowl, combine the flour, cornmeal, cheese, baking powder, sugar, salt and chili powder. Add the milk, eggs, vegetable oil and chiles, and mix just until moistened. Mixture may be a little lumpy.
Bake in preheated waffle maker according to manufacturer's instructions. Makes 4 to 5 large waffles.
Serve with your favorite salsa, sour cream and additional grated cheese.