Cut the zucchini into sticks, about 3–4 inches long and ½ inch thick. Pat them dry with a paper towel to remove excess moisture.
Place flour in one bowl, beaten eggs in another, and mix the breadcrumbs, Parmesan, garlic powder, paprika, salt, and pepper in a third.
Dredge each zucchini stick in flour, dip in egg, then coat with the breadcrumb mixture. Press gently to ensure an even coating.
Preheat your air fryer to 400°F (200°C). Lightly spray the zucchini fries with olive oil and place them in a single layer in the air fryer basket. Cook for 10–12 minutes, flipping halfway, until golden and crispy.
In a small bowl, whisk together mayonnaise, garlic, lemon juice, salt, and pepper. Chill until ready to serve.
Serve the zucchini fries warm with garlic aioli on the side for dipping.