Prepare the Zucchini: Wash the zucchinis thoroughly and cut them into 1/4-inch thick coins.
Set Up Breading Station: In one bowl, beat the eggs. In another bowl, mix breadcrumbs, Parmesan cheese, garlic powder, onion powder, paprika, salt, and pepper.
Bread the Zucchini: Dip each zucchini coin into the beaten eggs, allowing any excess to drip off, then coat it with the breadcrumb mixture. Press lightly to ensure the coating sticks.
Preheat the Air Fryer: Preheat the air fryer to 400°F (200°C) for about 3 minutes.
Arrange the Zucchini: Place the breaded zucchini coins in a single layer in the air fryer basket. Do not overcrowd; cook in batches if necessary. Lightly spray the tops with olive oil.
Air Fry: Cook for 8-10 minutes, flipping halfway through, until golden brown and crispy.
Serve: Remove from the air fryer and serve immediately with your favorite dipping sauce.