This grilled zucchini recipe is just 81 calories for about 1 1/2 cups! Topped with feta, pine nuts and parsley, this marinated grilled zucchini is easy, delicious, and impressive.Marinated grilled zucchini slices recipe is packed full of flavor, with lots of lemon, garlic. Plus salty feta and crunchy pine nuts... You'll want to make this recipe for zucchini weekly.