Amazon sells individual (restaurant) sized containers of peanut butter, nutella, jelly. High fiber (flax) minibagels and wraps last forever without drying out or crushing and taste good.
I have been toying with trying a homemade/reconstitutable chicken salad from dried chicken, mayo packets, and dried fruits (apples, cranberries)and veggies (celery). Amazon sells chicken in 7 oz pouches (like tuna) but that is heavy for LD hiking.
Also I have had thoughts about making a Doctor McDougall noole bowl or soup at breakfast in a wide mouth nalgene bottle and eating it as a leftover at lunch at ambient temperature--no more weight than carrying the equivalent in water if you are hiking in a dry area.