Cut off the ends of the zucchini, then quarter lengthwise into spears.
Drizzle with olive oil and season with salt and pepper.
Grill on medium heat for 3 minutes on a non-skin side, then flip to the other non-skin side and grill for another 3 minutes
Season with more salt and pepper to taste.
Notes
You can make this recipe with half yellow squash and half zucchini. Use kosher salt or sea salt and freshly cracked black pepper for the most flavor. Avocado oil can be substituted for the olive oil. Make sure to clean the grill grates and spray with grill spray before grilling. You can also rub half an onion or potato, cut side down, on the grates to grease them. This will prevent the veggies from sticking to the hot grates. For smaller cuts of zucchini, use a grill basket.