Line a Cookie Sheet with Paper Towels. Wash and dry Zucchini. Cut Zucchini about 1/4 inch thick, like Poker Chips and place on lined Cookie Sheet.
Line up three shallow bowls, placing flour in one, milk in the next and Seasoned Bread Crumbs in the third. With one dry hand, coat Zucchini in flour, shake off excess and drop into milk. Sink/flip with a fork and then place Zucchini in bowl with Breadcrumbs.. With other dry hand, thoroughly coat Zucchini and place onto Wire Baking Rack.
In a single layer, gently place Zucchini Zircles in prepared/greased Air Fryer Basket and use an Oil Mister to spray well with Oil.
Cook at 390 degrees for 8 minutes, carefully flipping one-half way through.