01 - Preheat your grill to medium-high heat, approximately 400°F.
02 - In a large bowl, toss the zucchini slices with olive oil, sea salt, black pepper, and garlic powder until thoroughly coated.
03 - Arrange zucchini slices in a single layer on the hot grill. Grill for 4–5 minutes per side until grill marks appear and zucchini is tender but not mushy.
04 - Remove zucchini from the grill and immediately transfer to a serving platter while still hot.
05 - Sprinkle the hot zucchini evenly with grated Parmesan cheese so it begins to melt slightly.
06 - Top with chopped fresh basil, parsley, and chives.
07 - Serve immediately while warm, or allow to reach room temperature before serving.