01 - Preheat your grill to medium-high heat, approximately 400°F.
02 - In a large bowl, toss zucchini slices with olive oil, sea salt, black pepper, and garlic powder until evenly coated.
03 - Arrange zucchini in a single layer on the hot grill. Cook for 4-5 minutes per side until distinct grill marks appear and zucchini is tender-crisp.
04 - Remove grilled zucchini and transfer immediately to a serving platter.
05 - While zucchini is still hot, sprinkle grated Parmesan cheese evenly over the top, allowing it to melt slightly from the residual heat.
06 - Top with chopped fresh basil, parsley, and chives.
07 - Serve immediately while warm, or allow to reach room temperature before serving.