There could be something wrong for sure. In the morning make a vet appointment. Collect as many droppings as you can so that they can do fecal tests on them for parasites. There are a number of things that can cause large, soft droppings. If it keeps happening, it is very possible that it could be a parasite.
Have you changed anything in this chins diet recently?
I'm feeding him his normal food from the ranch I got him from. I give him the occasional dried kiwi banana chip or half a teaspoon of raw organic oatmeal. And their water is filtered. His poop isn't always giant though, it's strangely big only sometimes
What brand is it? Mazuri, oxbow etc. I would stop with the banana chip treats, too much sugar. Does his poop smell at all? Is there ever any mucus on it? I would definitely take a sample to the vet and have it get checked out.