This is me exactly! Some folks think I am a food snob because I don’t eat a lot of classic hiker food (cheep, high processed carbs, long shelf life- lots of preservatives). The truth is I can eat a little bit and be ok, but much more and I am sick as a dog. I wish I could get away with inexpensive and easy foods, but not worth the pain, diarrhea, joint aches, exhaustion and brain fog.
I cant afford paleo to go everyday. I dehydrate foods, use freeze dried foods, use nuts, veg and fruit. Healthy fats including animal based fats, coconut, avocado and olive oils. If you need a specific diet usually best to send yourself resupply boxes and supplement with just a little ready made stuff. Very time consuming, but if that’s what it takes then you need to allow yourself the time.