01 - Pat the zucchini slices dry with paper towels to remove excess moisture.
02 - In a shallow bowl, whisk together the egg and milk until combined.
03 - Combine panko breadcrumbs, Parmesan cheese, garlic powder, smoked paprika, salt, and black pepper in a separate bowl.
04 - Dip each zucchini slice into the egg wash, then press into the breadcrumb mixture to coat evenly.
05 - Place coated zucchini slices in a single layer in the air fryer basket without overlapping; repeat in batches if needed.
06 - Air fry at 400°F (200°C) for 8 to 10 minutes, flipping halfway through until golden and crispy.
07 - Serve immediately with lemon wedges and your choice of dip, if desired.