The real challenge lies in making good food choices when you’re working 12-16 hour shifts, and everyone else around you is eating whatever they please.
Not every sitting has to be a complete meal (which is a meal that contains a protein, a fat, and a carb), but the more complete meals you have the better.
Eating multiple times throughout the day will help ensure that you are giving your body all of the nutrients that it needs, which is very difficult to do eating only once or twice per day...