I know this probably won't help right now, but many transgendered people have self-destructive phases. Somehow it just seems like part of the process, or at least it can be part of the process. And note I said "self-destructive phases" and not "a self-destructive phase". It can bite you in the butt when you least expect it.
See, working on your gender issues isn't the same as admitting you have gender issues and they go away just like that. You've buried them for a reason. For me, it wasn't so much burying my gender issues as burying the hurt, fear, depression, and self-image problems they "caused". I was feeling pretty darned good when I started dealing with my gender issues. But very soon I started having to deal with all that hurt, too.
Burying such strong feelings is a skill you learn. It's a coping mechanism that gets you through. When things get too much for me to handle, like recently, I go back to stuffing the hurt and all that. And because my gender issues are the reason I'm feeling that pain, I don't feel like dealing with them, either. So I fall back into old habits, learned coping skills, to avoid having to deal with the whole shebang.
I understand wanting to be invisible, too. For me, it's just wanting to be me and not worry about what other people think or having to worry about how I interact with them. If I'm invisible, they don't matter; there's nothing they can do to (hurt) me. Sometimes I think it's preferable to be me around nobody than to be not me around other people. But I take comfort, however small it may be, that given those two options I prefer to be me.
I'm not quite sure what you mean by eating to hide your true self, but I understand eating so nobody will find you attractive. It's a form of pushing people away. "You couldn't possibly be interested in me because I'm so ugly, so there." Heh, any given Sunday I can think of five reasons off the top of my head why nobody would ever be attracted to me. But you know what? It's not foolproof. I'd be willing to bet there are at least a few people in your life who don't care and are attracted to you in that way. (Me, I have no life on purpose, so I wouldn't take that bet in my case. But it's an extreme measure I don't recommend.)
Hang in there, ht. The bumpy times don't last forever. I'm not sure why it's happening, but these times seem to be when people do their heavy duty work on their issues.