01 - Preheat oven to 425°F. Line a baking sheet with parchment paper and set aside.
02 - In a large mixing bowl, combine zucchini slices with olive oil, lemon juice, lemon zest, sea salt, and cracked black pepper. Toss thoroughly until every slice is evenly coated.
03 - Lay the seasoned zucchini rounds in a single layer on the prepared baking sheet, making sure not to overlap pieces for even roasting.
04 - Sprinkle freshly grated Parmesan cheese evenly over each zucchini round, pressing gently so the cheese adheres.
05 - Bake on the center rack for 15 to 18 minutes, or until the zucchini is fork-tender and the Parmesan is golden and bubbly.
06 - Transfer the zucchini to a serving platter, garnish with chopped fresh parsley if desired, and serve immediately while hot.