Are you craving bad foods that you used to eat a lot of? Sometimes, people can go a little gaga when they feel "deprived" of foods they used to rely on (for comfort, enjoyment, etc) for a long enough time, then they start craving them.
I doubt it has anything to do with the fact you're smaller, but it may have something to do with your diet. Are you getting enough protein, fiber and water? Those are vital to staying full. Have you been exercising a lot? If you are, that calorie range probably isn't sufficient. Also, If you're dipping below 1200 (for some people, that may even be 1300), that often has the effect of making people irrationally hungry (starvation mode- your body is telling you to stock up on fat because it's worried that there's a food shortage).
Started July 1, 2012 @ 290lbs