Preheat oven to 425°F. Line a large rimmed baking sheet with aluminum foil. Place a cooling rack on top of the lined baking sheet and coat with nonstick cooking spray. Set aside.
Prepare the zucchini. The size of your zucchini will determine how many slices (or fries) each zucchini will yield. In general, one small to medium zucchini will yield 12-16 slices. After slicing pat dry with paper towels.
Transfer the panko breadcrumbs, grated parmesan cheese, Italian seasoning, garlic powder, ½ a teaspoon of salt, and about ¼ a teaspoon of black pepper to a shallow bowl or container. Mix well to combine.
In a separate bowl, combine the remaining salt and black pepper with the flour. Mix well.
Finally, in a third bowl, whisk together the large egg and egg white.
Working in batches or one at a time, dredge the zucchini in flour first, followed by egg, and finally the panko and parmesan mixture. You may need to press the zucchini gently with your fingers to help get the panko to stick.
Transfer each zucchini slice to the wire baking rack, making sure to leave a little space between each. Bake for 20-25 minutes, or until golden brown and tender-crisp.
This recipe is best served immediately.