Yes, you certainly can include it! Chivda is a low calorie snack made of simple cereals like rice, wheat, etc. The ingredients in themselves are not very high on calories. Besides, chivda is roasted, not fried, so it does not contain too many extra calories due to oil. So the overall cal content is pretty low and suitable for those on a diet. You should make sure that you keep a check on the amount of salt used to make the namkeen. Too much salt can lead to water retention causing you to gain excess weight and in this way, make you look bloated.