Gosh, I don't remember being this hungry with my first pregnancy. I am 35 weeks now and have to eat quite a bit. Last night I ate a giant sandwich for dinner and when I tried to lay down for bed a few hours later I was STARVING and had to get up and get a bowl of cereal so I could go to sleep. (Probably in part because I didn't have an adequately giant breakfast or lunch, though.)
DH says it's not great to eat right before bed, but I told him I HAVE to, or else I'll wake up in the middle of the night so hungry I can't get back to sleep, and will have to go to the kitchen to get food so I can get comfy and fall asleep again.