Preheat your oven to 225°F (110°C). This low temperature will help dehydrate the zucchinis for crispiness.
Line a baking sheet with parchment paper for easy cleanup and to prevent sticking.
In a mixing bowl, combine the grated Parmesan, garlic powder, onion powder, oregano, salt, and black pepper. Stir well to blend the seasonings.
Place the thin slices of zucchini into another bowl and drizzle with olive oil. Toss them gently to coat each slice evenly.
Sprinkle the seasoning mixture over the zucchini slices and toss again to ensure they are well coated with the cheese and spices.
Arrange the zucchini slices in a single layer on the prepared baking sheet, making sure they do not overlap.
Bake in the preheated oven for about 1.5 to 2 hours or until the chips are golden brown and crispy, flipping them halfway through baking for even crisping.
Once done, remove from the oven and let them cool slightly. They will continue to crisp up as they cool.
Garnish with fresh chopped parsley before serving for a pop of color.
Notes
Serve in a rustic wooden bowl or on a platter and enjoy as a delightful snack or side dish! Pair with a homemade garlic aioli for dipping.