In one pie plate or bowl, use a fork to combine the flour, salt, garlic, black pepper, paprika, and granulated onion until it is even in colour. Set this aside.
In a second pie plate or bowl, use a fork or a whisk to combine the eggs and milk until they’re evenly blended. Set this aside as well.
In a third pie plate or bowl, use a fork to toss together the panko bread crumbs and yellow cornmeal.
Arrange these in the order you made them (flour, egg/milk, bread crumbs/cornmeal) with a clean plate or sheet pan to the right.
Working with one slice at a time, dredge the tomato first through the flour on both sides and tap off any excess. You want a very thin coat that you can actually see tomato flesh through.
Ease that slice into the egg and milk mixture, turning once to make sure the whole thing is coated. Let any excess drip away before laying it in the bread crumb/cornmeal combination. Use your hand to scoop the mixture generously over the top of the tomato.
Press lightly to get the crumbs to adhere to the tomato, flip it over and repeat. Lift the tomato gently with two fingers or a slotted spatula and let the excess fall away back into the bowl.
Lay breaded tomato slices onto the prepared plate or pan in a single layer and repeat until all of the tomato slices are coated.
Brush the preheated air fryer basket with olive oil. Position as many tomato slices as you can in a single layer without the edges touching. Drizzle or brush a little olive oil (no more than ½ a teaspoon) or spritz with olive oil spray over the top of the tomato.
Air fry for 10 minutes, gently flip with tongs or a slotted spatula, then drizzle or brush or spritz again with the olive oil. Continue cooking for 4-7 minutes, or until the tomatoes are golden brown and crisp.
Transfer the crispy air fried green tomatoes to a paper towel lined plate and place them in a warm oven to stay heated. Repeat with the remaining crumb coated tomato slices.
Salt to taste and serve with dip, as a side dish to grilled meats or vegetables, or in a sandwich or tacos!