Glutton Sim keeps eating all the prepped ingredients

A Glutton Sim in my household keeps getting prepped ingredients (Home Chef Hustle) out of the fridge to eat instead of leftovers. Is this supposed to be happening? It makes sense to me that a Glutton would eat these when there are no leftovers available, but the fridge is fully stocked with leftovers and he still defaults to eating these prepped ingredients.