There are certain problems cooking when living in a truck. Wind, rain, cold, heat and space. And trying to keep eggs and vegetables fresh with no refrigeration (would rather have books than a cooler).
I have a plastic bag of oatmeal mix (Scottish oats from Bob’s Red Mill with toasted coconut, pecans and cranberries) that is my go-to breakfast. If its not raining. If the wind is below 30 mph.
My favorite, when I have eggs, is this process: I fry the eggs on top of a box of soaked potatoes, then cover them.
The key to all of this is steel plates and bowls. They wash easily, don’t break and are inexpensive. Compact Stainless Steel Dish Set for Home and Outdoor Use, with Small Plate, Bowl, and Cup
Dinner is usually a soup made from dried veggies (Harmony House Foods Soup Mix, Dried Vegetable, 12 Ounce Quart Size Jar) with dried mushrooms and a part of a pack of onion soup mix or hot and sour soup mix.