busyIf you are decolonizing your diet, consider Tanka Bars. Hardcore folks may make their own pemmican, although honestly, I find modern protein bites tastier. We are extremely fond of the peanut butter balls our Amish friends make, and usually buy some when we're shopping around there for several hours.
That doesn't necessarily mean you can't bring any junk food. Just look at what you're packing. Do you have a balance of fat, carbohydrates, protein, and fiber? Do you have fruits, vegetables, grains, nuts/seeds, meat, cheese, and beverages? Smaller and larger portions, or things you can eat in any quantity? Your exact needs may vary, but you should have a variety of options. This minimizes the temptation to buy candy bars at a rest stop.