I'm having trouble eating?

I wasn't sure where to put this so I guess it's going under "motivation and support." Anyway, when I started using MFP, I was probably the same as most people ("What the heck? Only 1,350 calories a day? I'M GONNA STARVE!!!"), but you know, you get used to it, eventually you don't feel as hungry, and you lose nearly 30lb! At least, that was what happened to me. Except now, where I used to have trouble NOT eating, I'm now having difficulty getting myself to eat anything.
It's not that I'm depressed, but I do find myself feeling guilty whenever I eat. It's not a crippling guilt, but more like the guilt you feel when you see a sad person on the street and just keep walking. I know that I need to eat though, so I'll start eating a banana or whatever, but after a few bites, I just become disinterested and throw it away. I mean I feel the hunger, but as soon as I start to taste food, I no longer want it.
My questions are: Has anyone else had this problem? And how do I overcome it?