Fried Green Tomato BLT

Whisk the cornmeal, flour, garlic and onion powders, cayenne, 1/2 teaspoon salt, and 1/4 teaspoon black pepper in a medium bowl. In another medium bowl, stir in the buttermilk, hot sauce, 1/2 teaspoon salt, and remaining 1/4 teaspoon pepper. Fill a large Dutch oven or cast-iron skillet with oil to a depth of 1 inch and heat carefully to 350 °F. Dip the tomato slices in the buttermilk, then dredge in the cornmeal mixture. Fry until crispy and golden brown, 3 to 4 minutes per side. Sprinkle with remaining 1/4 teaspoon salt and drain on a wire rack placed over a sheet tray.