Preheat your oven to 425°F (220°C) and line a baking sheet with parchment paper.

Slice the zucchinis into uniform 1/4-inch rounds.

Toss the zucchini slices with olive oil, Parmesan cheese, garlic powder, Italian seasoning, sea salt, and black pepper in a large mixing bowl.

Transfer the coated zucchini onto the baking sheet in a single layer.

Bake in the preheated oven for 18 to 20 minutes until golden and crispy.

For extra crispiness, broil for 1 to 2 minutes, watching closely.

Let cool slightly, then garnish with parsley or lemon zest before serving.