Some just eat a lot. I do sometimes, not frozen pizza but other stuff, but then I also regularly skip both breakfast and lunch or dinner without really thinking about it so on the whole I don’t think I eat more than others. I’m around 60 KG. The one that makes people look is when I pack away 30 pieces of sushi while they ordered 10 pieces and are somehow satisfied. That or how I can kill a full bag of potato chips (300 g) in one sitting, a cool 1500 kcal of crispy goodness.