In a shallow dish, whisk together the eggs, flour, salt, and black pepper.
In another shallow dish, mix together the breadcrumbs and parmesan cheese.
Dip each zucchini slice in the egg mixture, then press it into the breadcrumbs and cheese. Place on a baking sheet.
Preheat your air fryer to 400°F. Arrange half the zucchini slices in a single layer, leaving a little bit of space between each one. Spray with oil and air-fry for 5-7 minutes. Flip, spray with more oil, and air-fry for another 5-7 minutes until golden brown and crispy. Repeat with the remaining half. Enjoy!