I don't want to start a run on anything, but with the increasing number of Climate Change disasters (and the ridiculous crackdown on undocumented migrant workers in my country) we may need to stock up on nonperishable food, at least two weeks worth. That sounds paranoid, and I'm not a pepper, but current events point toward at least some interruptions and reductions in the global food supply. You never know when your area might see a crisis event or a shortage. Folks in blizzard-prone areas already do this sort of thing.

Beyond sources of protein like canned/tinned tuna, those freeze-dried meals made for campers can be very convenient to store, since they are mostly flat and lightweight. Just don't rely on those low-nutition carb-heavy emergency kits. I prefer Mountain House brand, but Bighorn Mountain Food and Peak Refuel are highly rated. Meal replacement bars are okay, and may give you the calories and nutrition you need, but probably won't feel like a meal.

If you have room for it, some extra water might be wise to have on hand as well, for preparing those camping meals, as well as for drinking and sanitation.

I keep thinking about that unexpected snow/ice storm in Texas that froze the pipes and left residents with no water, no electricity or heat, and no way to get food.

It can be expensive to do this, so maybe add a little at a time until you have enough set aside for your own family.