Wash the zucchini, discard the ends. Slice the zucchini lengthwise, and cut the zucchini slices in half. Preheat the air fryer according to your brand. The Ninja air fryer says 3 minutes. Coat the strips with egg and then roll the strips/slices in the bread crumbs. Place the strips in the air fryer basket and spray the zucchini pieces with vegetable spray. Bake at 390 degrees for 15 minutes. Serve as an appetizer or vegetable side dish.