Cut ends off of zucchini and slice longways about a quarter inch thick. Repeat with all zucchini and lay flat on a cutting board or large clean surface.

Sprinkle both sides of zucchini with salt and pepper.

In a small bowl mix olive oil and lemon juice. Baste both sides of zucchini with mixture.

Heat your grill to medium-high heat. Lightly oil grill to prevent sticking.

Place zucchini on grill and cook for a few minutes or until you see nice grill marks. Flip over and cook until you have nice grill marks on the other side.

Remove zucchini from grill and serve with a sprinkle of chopped green onion (optional).