Im a wind turbine mechanic, not quite as time demanding as a nurse, and I frequently have problems with getting enojgh time to eat. I always carry protein bars in my pocket at work and if you can carry a fannypacc****ep 2 boost shakes with me, really easy way to get some protein in a pinch, and they dont have to be refrigerated, although they dont taste good warm lol. But I'd be cautious, last time I was in the hospital, one pf the techs got chewes out by the charge nurse for eating at the doorside chart desk. So it would probably depend on the policy of the facility you're at. My company had a no food in company vehicles policy until I arrived, but with my rny they made an exception, and then the same exception for my twin bro when they hired him, he's also rny.