Is it possible to bloat up when not eating right? only eat like 2 small portions a day.

Yes it is possible: Yes it is possible to feel bloated when not eating right.

Yes: Gas still forms in the GI tract even with light eating. Try taking simethicone 1/2 hour after meals and at bedtime to prevent gas build-up. When bloated, drinking warm water and/or putting a hot water bottle on the abdomen helps break down the gas and helps you pass it. Try to identify what foods cause more gas.