In a shallow bowl, combine flour, salt, and Cajun seasoning. In a separate bowl, whisk eggs.
In a third shallow bowl, combine panko and olive oil. Microwave at 30-second intervals and stir. Cook until lightly browned. Once cooled, add Parmesan.
Dip each zucchini stick into flour, egg, and panko breadcrumbs.
Lightly spray an air fryer basket with nonstick cooking spray. Add a single layer of zucchini fries to the basket. Lightly spray the zucchini fries with cooking oil.
Cook at 400℉ for 8-9 minutes, flipping halfway. Season with salt to taste.