Line two air fryer sheets with foil and set aside.
In a shallow bowl, combine the almond flour, 2 tablespoons of chickpea flour, cornmeal, lemon zest, garlic powder, onion powder, paprika, black pepper, and cayenne. Whisk thoroughly to combine.
Place the remaining ½ cup of chickpea flour in a separate shallow bowl.
In a third bowl, whisk together the aquafaba, hot sauce, and mustard.
Working with one tomato slice at a time, dip it in the plain chickpea flour, followed by the aquafaba, letting the excess liquid drip back into the bowl for a few seconds. Finally, dip it into the seasoned almond and cornmeal mixture, making sure it’s completely coated.
Place it on one of your prepared sheets and repeat with the remaining tomato slices. Make sure none of the slices overlap.
Cook one sheet at a time in the center of your air fryer. Air fry at 400 degrees for 5 – 6 minutes, carefully flip the tomatoes, then air fry for another 5 – 6 minutes, until golden brown all over.
Repeat with the remaining tomato slices. Transfer the tomatoes to a serving plate, garnish with the parsley, sprinkle with salt to taste, and serve with lemon wedges on the side.