You might be surprised! For all the complaints we have of legionaries, and they are manifold and sometimes petty, food quality isn’t one of them - something which has been noted by historians as unusual considering that food is usually one of the top complaints of pre-modern (and often modern) soldiery. Considering the high quality of medical treatment and that the Romans considered diet to be a core part of health, and the known rations supplied to legionaries, it’s likely that most legionaries were eating as-well-as or better than their civilian counterparts!