01 - Set the oven to 225°F and line two baking sheets with parchment paper.
02 - Wash and dry the zucchini, then slice into 1/8 inch rounds using a sharp knife or mandoline.
03 - Place the zucchini slices on a clean kitchen towel and pat dry to absorb excess moisture.
04 - Transfer the slices to a large bowl, add olive oil and seasonings including salt, pepper, garlic powder, and smoked paprika; toss gently to coat uniformly.
05 - If using Parmesan, sprinkle over the slices and toss lightly to incorporate.
06 - Lay the zucchini slices in a single layer on the prepared sheets, ensuring no overlap.
07 - Bake for 35 to 45 minutes, flipping once halfway, until chips are golden and crisp.
08 - Remove from oven and allow to cool for a few minutes to enhance crispness prior to serving.