In a large glass or ceramic mixing bowl, whisk together yoghurt, egg, and oil.
In another bowl, combine flour, cornmeal, sugar, baking powder, salt, and chili powder. Add the dry ingredients to the wet. Mix well, being careful not to over mix. Batter should be lumpy. Fold in the cheese, corn, green chiles, and bell pepper. Fill well-greased muffins tins 2/3 full. Bake at 400°F for about 20 minutes until golden or until a wooden toothpick inserted into the center comes out clean.

Makes 12 servings.