01 - Preheat oven to 425°F. Line a baking sheet with parchment paper and set aside.
02 - In a large mixing bowl, toss zucchini rounds with olive oil, fresh lemon juice, lemon zest, sea salt, and cracked black pepper until evenly coated.
03 - Lay the seasoned zucchini slices in a single layer on the prepared baking sheet, ensuring none overlap for even roasting.
04 - Sprinkle freshly grated Parmesan cheese evenly over each zucchini round, pressing gently to help it adhere.
05 - Bake for 15 to 18 minutes, or until the zucchini is fork-tender and the Parmesan has turned golden and bubbly.
06 - Transfer to a serving platter, garnish with chopped fresh parsley if desired, and serve immediately while warm.