Thanks guys for all the great suggestions. I think I will wait till everyone has finished eating and go at the back and ask them if I can get a second meal. The worst that can happen is they will say no and I will have to take the walk of shame but as long as they don't rub it in or see me indifferently then its all good.

Im not a big fan of protein bars or granolas but I will try getting something from subway with some less sauces.