Mix garbanzo bean flour with salt and pepper on a plate. Whisk eggs in a bowl. Scoop almond flour onto another plate. Cover tomatoes with garbanzo bean mixture to coat, then dip them in the eggs. Dredge in almond flour to coat completely. Pour about 1/2 inch oil into a large skillet and heat over medium-high heat. Place tomatoes into the hot oil in batches of 4 or 5 so that they do not touch. Cook until browned, 1 to 2 minutes. Flip and fry the other side, 1 to 2 minutes more. Drain on a paper towel-lined plate. Repeat with remaining batches.