Could be just your pattern. I have days like that, and then I have days where I can eat just one or two meals, but most days I'm hungry pretty regularly (I'm very active). Hunger is normal, it's not supposed to "go away". You said you're losing weight and you feel good, so I wouldn't worry about it.
If the need to eat often is bothersome to you, try making your meals a little bigger, or adding a little more fat to them. Otherwise you seem to be doing just fine.