When a large bag of chips goes stale overnight, is there a way to make them crispy again?

Never done it but I would put them in a brown paper bag with the top partly open. Then check on them at 200 degrees. This should also drive off the staleness.

NOT POSSABLE!

BAKING THEM WILL BURN THEM AS THEY ARE ALREADY COOKED!

put them on a cookie sheet and in the oven set on 150 degrees for about 10 minutes. low heat. this will dry them back out.

Nope.

You could try, take them out of the bag, spread them on a sheet pan and put in an oven for 15 minutes at a low setting, this might dry them out again to crisp up!

Baking them might improve them slightly,

but don't expect them to be as good as they would be if fresh.

A couple of minutes in the oven will work, but why bother?

Reheat them in the oven, and they’re good as new.

take them out of the bag an put them in your oven for a few minutes

You can put them on a cookie sheet in the over for a bit.