My theory is that it's all part of a more sinister agenda. The more obscure your food order, the more important you feel when someone has to go out of their way to provide it. Just get a load of cheap food and lay it out on a table. People can help themselves whenever they want it. If they genuinely don't like it that's their problem.
Food is food.
It's a film set, not a five star restaurant. The flip side to all this is that you want to keep everyone happy, especially if things are quite slow. Food makes people happy. The best solution is to persuade someone who you know can cook to make a big bowl of pasta salad, or similar, each night. This costs nothing, and at least it shows a bit of effort.