Bean, chickpea, and lentil dishes last a week in the fridge (probably more tbh).

Also, if you have a desk/cube, a great tip I picked up from a vegan friend is to keep a jar of peanut butter and a spoon in your drawer. Before I became remote, I would eat about 2 tablespoons at 10, 3, and 5. Probably not quite as good as the protein balls but cheap and effective.