B'gan Sliced Green Zucchini contains significant vitamins and has a high fiber content, making it the perfect substitute for the usual carb-rich fare. Geen Zucchini makes the perfectly-light side dish for a heavy meal: One cup of sliced zucchini has about 18 calories.Mix it up with tomato sauce for a side that's ready in minutes or roast some Zucchini chips with oil and salt.