Field work food

Those of you guys doing field work, what do you take in the field? I don’t see my truck from 8-4 as i work on large boundary jobs. I usually pack a prepackaged single serving trail mix and whatever jerky I’ve made (depends on what hunting season is in). When it’s could out I pack an uncrustable. A spicy V-8 and a couple bottles of water in the lath bag. I’m so sick of eating the same thing everyday. What is your go to food when you’re in the field and can’t get back to the truck for lunch?