I used to find the same thing when I was younger and very desperate to be thin (I was a fat kid, Faat teenager and have to really work HARD to get to and stay a 10-12) so I used to not eat breakfast and then have an apple and a diet coke for lunch, and half my dinner (Terrible I know, it let to a disorder, I'm over it now) But I didn't get very hungry then either. It's because your metabolism is through the floor cause not starting the engine with fuel, so when you eat brekky for instance, your metabolism speeds up which makes you feel hungrier, is actually a good sign because means your body is burning.