Nobody is gonna hate ya for having that
Seriously though, it's a high metabolism...and the more muscle mass you manage to add to your frame, the more the furnace gets stoked. I've lost a couple lbs just be skipping lunch.
Never going on Survivor.
That's for sure.
Have you experimented with Creatine supplements?
I'm not recommending it, since there appears to be a lot of contradictory information out there regarding the health effects.
But it helped me add weight.
Then I dropped back to normal after I gave it up. (D'oh!)
Edit: Make sure you're getting enuf protein...and some carbs for refueling if you're working out. Also if you can squeeze in a mini-meal as "brunch" and one between lunch and dinner that should help. (Does that fall into your category of eating like a pig? )