Preheat the grill to medium-high heat
Wash the zucchini and trim the ends
Slice the zucchini lengthwise into planks or cut into thick rounds
Brush both sides lightly with olive oil
Season with salt and pepper
Add optional seasonings like garlic powder, paprika, or Italian seasoning
Place the zucchini directly on the grill grates
Grill for 2 to 4 minutes per side
Turn once grill marks appear and the zucchini softens
Remove from the grill when tender but not mushy
Serve immediately