Combine together the breadcrumbs, Parmesan cheese and spices. Set aside.
Cut each zucchini lengthwise in half and then cut each half into sticks.
Beat egg and milk in a shallow dish.
Dip each zucchini stick into the egg mixture and then into the breadcrumb mixture.
Place each zucchini stick on to a baking tray that has been lined with parchment paper, press the breadcrumb mixture into the zucchini to make sure the breadcrumbs are sticking.
Spray each zucchini stick with the olive oil cooking spray before baking.
Bake for 10 to 15 minutes until the zucchini sticks are golden brown and tender.
Serve immediately with marinara sauce.
Notes
You could also prepare this recipe in a preheated 400F air fryer.
Place the zucchini sticks in a single layer and bake 12 to 14 minutes, flipping them halfway until the zucchini sticks are crispy and tender.
Depending on the size of your air fryer, you might have to do this in batches.