Slice each tomato into 4 slices of even thickness. Beat the egg in a small bowl. Combine the parmesan, pork rind crumbs, spice blend, salt, and pepper with a fork, then place it on a plate.
Heat the oil over medium-high heat in a cast-iron skillet. Once the oil begins to shimmer, dip a tomato slice into the egg, then coat with the crumbs. Gently place it into the oil and repeat with the remaining slices, placing them about an inch apart. Flip each slice with tongs when the bottom begins to turn golden brown, about 2-3 minutes, then cook for 2-3 minutes more. Remove from the pan and place on a plate or baking dish lined with paper towels. Place in the oven on warm if needed. Repeat in batches until all the tomatoes are fried.
Macros per serving: 211 calories, 3 grams net carbs, 10 grams protein, 17 grams fat.
