Green chilies are rich in vitamins A and C with the dried version higher in vitamin A and the fresh version higher in vitamin C. They can contain as much as six times the amount of vitamin C as a single orange. Their vibrant color signal high amounts of the antioxidant beta-carotene, which supports the cardiovascular system, as well as helps maintain the health of the skin, eyes and immune system. Green chilies also contain vitamins B and E, and are a good source of iron and potassium. They do not contain fat or cholesterol and help block the body's absorption of cholesterol while remaining low in calories.