In a gallon ziplock bag (or large bowl), combine the flour, cornmeal, 1 teaspoon of salt, garlic powder, black pepper, and cayenne. Seal the bag and shake to mix (or whisk if in a bowl). Add the okra slices, seal the bag, and toss with the dry ingredients. Set aside.
In a medium bowl, whisk together the eggs, ¼ teaspoon salt, and buttermilk. Using a slotted spoon or your hands, transfer the flour-coated okra pieces (leaving the remaining flour behind in the ziplock) to the egg mixture and mix until fully coated.
Place the egg-soaked okra slices back into the dry ingredient bag, zip the bag, and shake until well coated in the flour mixture.
Heat a frying pan with high sides with roughly 1 inch of oil until it registers 375°F on a thermometer over medium-high heat. It will likely take 8-10 minutes to come to temperature.
In 3-4 batches, use a slotted spoon to carefully lower coated okra pieces into the hot oil, and cook for 3-4 minutes, stirring halfway through, until it’s a deep golden yellow. Transfer to a paper towel-lined baking sheet or plate to soak up excess oil.
Repeat with the remaining batches of okra, ensuring the pan is never overcrowded. The next few batches of okra may need an extra 1-2 minutes to cook as the oil returns to temperature from being crowded with okra.
Sprinkle fried okra with extra salt when still hot, and enjoy after 5 minutes of cooling! Best eaten right away.