Saw this story recently about how little food many jails now serve prisoners. Many prisoners get two small meals a day.
I toured the local country jail two years ago, and got to see them making lunch. At the time I thought that the lunch was a little light, and I assumed the dinner was going to be bigger or that it was just that lunch that days was lighter than usual, but it appears that it's always that way.
This is very similar to what I saw for lunch that day:
I'd be hungry after eating that.