Cut tomatoes around ¼ inch thick. Season both sides with salt and pepper (if you like spicy use Cajun or Creole seasoning).
Place cornmeal (flour or Jiffy Cornbread Muffin mix can be sub'd) in a bowl; dip and coat each tomato slice until thoroughly coated. Allow to sit for a few minutes before frying.
Heat vegetable oil in a skillet over medium heat.
Place coated tomato slices in the hot oil; fry until the coating is browned and crusty. 1 to 2 minutes per side. Transfer to a paper towel-lined plate to drain. Repeat with remaining tomato slices, add more oil if needed.