Slice tomatoes into about 1/4 inch thick slices.
Heat oil in a large skillet over medium - medium high heat.
You will need 3 bowls. Bowl 1: Whisk together egg and milk. Bowl 2: Place Corn starch and salt & pepper if desired. Bowl 3: Place Corn Meal and chili powder. Stir together.
Take each tomato slice and coat with cornstarch. Then dip into egg wash. Then into the corn meal mix.
Place in hot oil and fry on each side 2-3 minutes or until golden brown. Remove from oil and place on a paper towel lined plate or a baking rack to drain the excess oil.
Repeat the process with each slice of tomato.