You can roast the ear of corn over a gas burner ahead of time. If you don't have a gas stove to roast the corn on, you can grill it either outside or on a grill pan. The flavor isn't the same, but it's close.
Heat oil to 365 degrees.
Mix all dry ingredients and set aside.
Cut the kernals off the ear of corn into a bowl. Add egg and scramble w/corn. Add buttermilk and chilies and mix together.
Add dry ingredients to wet and mix completely careful to get rid of all lumps.
Cut each hotdog into 4 pieces (you'll have 32 when done) and insert a toothpick into each.
Dip each hotdog piece into batter and swirl around to completly coat. Drop into hot oil no more than 4 at a time. Turn as they float up for even cooking/color. Cook until golden.