Prepare the Oven and Baking Sheets: Set your oven to preheat at 425°F (218°C). Line two baking trays with parchment paper to prevent sticking and make cleanup easier.
Cut the Zucchini into Fries: Wash the zucchinis and slice each one lengthwise into quarters. This will create about 16 long, thin pieces from each zucchini, resembling fries. Try to keep the sizes consistent for even baking.
Make the Egg Wash: In a small bowl, beat the egg lightly until well combined. This will act as the adhesive for the coating.
Combine the Coating Mix: In a separate bowl, mix together the grated Parmesan cheese, garlic powder, and Italian seasoning until evenly blended.
Coat the Zucchini Pieces: Dip each zucchini piece into the beaten egg, allowing any excess to drip off, then immediately roll it in the Parmesan seasoning mixture. Ensure each piece is fully coated with the cheesy, flavorful crust.
Arrange and Bake: Place the coated zucchini fries in a single layer on the prepared baking sheets, making sure they don’t overlap. Bake in the preheated oven for 25 to 30 minutes, flipping each fry halfway through cooking to achieve an even golden crispness.
Prepare the Lemon Parsley Aioli: While the fries bake, mix the mayonnaise, lemon juice, minced garlic, and chopped parsley in a small bowl. Season with salt and pepper to taste, stirring well.
Serve and Enjoy: Once baked to crispy perfection, serve the zucchini fries hot alongside the tangy lemon parsley aioli for dipping.