Would eating a peanut butter and jelly sandwich every day make you fat?

Just asking since I do eat one every day in the morning or would it be better to eat cereal. But in my house we have a mouth problem and have to much food to throw away/waste if we poison it with the poison to kill the mouths. They live mostly in the kitchen area. But anyways, yeah does a PB&J make you fat daily. It sounds nutritious but at the same time, Bread and peanut butter make you fat vs a cup of a milk, banana, and some honey bunches of oats.