It is perfectly normal not to be hungry when you're in ketosis, as has been said here. I know it's a great feeling to be in control and have no cravings, but somehow during this process it is essential to find balance. You don't have to go overboard, but try to get in the habit of eating eat three meals a day even if you have to plan them out. You need to do this to keep your blood sugar stable and your body functioning properly. Not eating enough on Atkins, can cause a slow in your weight loss just as easily as eating too much can on other diet plans.
Good luck!