01 - Preheat oven to 425°F. Line a baking sheet with parchment paper and lightly grease or spray it with olive oil.
02 - Slice zucchinis into sticks approximately 3 inches long and 1/2 inch thick.
03 - In a shallow bowl, whisk together eggs and milk until smooth.
04 - In a separate bowl, combine panko breadcrumbs, grated Parmesan, dried Italian herbs, garlic powder, salt, and black pepper.
05 - Dip each zucchini stick into the egg mixture, then roll thoroughly in the breadcrumb mixture. Arrange coated sticks on the prepared baking sheet.
06 - Spray or lightly drizzle the coated zucchini with olive oil. Bake for 20 to 25 minutes, flipping once halfway, until fries are golden and crisp.
07 - While fries bake, heat olive oil in a saucepan over medium heat. Add chopped onion and sauté until softened, about 3 minutes.
08 - Stir in minced garlic and cook for 30 seconds. Add crushed tomatoes, dried oregano, sugar, salt, and pepper. Simmer uncovered for 10 to 12 minutes, stirring occasionally.
09 - Remove from heat and stir in fresh basil if using. Keep warm until serving.
10 - Plate zucchini fries hot and serve alongside warm marinara sauce for dipping.