Preheat your air fryer to 400°F.

In a medium mixing bowl stir together ¾ cup panko, ⅓ cup flour, 1 teaspoon salt, ½ teaspoon pepper, ¼ teaspoon cayenne pepper, and ½ teaspoon onion powder. Set the bowl aside.

In a small mixing bowl whisk 1 egg.

Slice zucchini into 1/4-inch thick disks.

Dip the zucchini slice into the egg, then coat with the bread crumb mixture.

Repeat the breading process until all slices of zucchini are coated.

Drizzle with 2 Tablespoons olive oil on both sides, using a total of ¼ cup olive oil.

Place the spicy zucchini bites in a single layer in the air fryer basket. You may need to do this in two batches.

Air fry for 12 minutes, flipping halfway.