You can eat expired Doritos chips as long as they've remained sealed and are not moldy or taste really bad.
Expiration dates on the Doritos and other chips does not mean the chips are bad but is a general guideline to let you know until how long they are at their freshest.
Once the chips expiration date has passed they get less fresh and don't always taste as good as fresh chips.
If the Doritos chips or other chips are expired longer than a few years then I would not eat them as they would likely not taste very good.
But if the chips are within a year or two of expiration then they are usually good to eat.
Expired chips can make you sick if they have actually gone bad but most often the expired chips are safe to eat as long as they've remained sealed.
The expired chips will lose their flavor overtime but remain safe for 1 to 2 years past their expiration date.
At worst you would not like the taste of the expired chips and not want to eat any more of the expired chips or if you did eat chips that have gone bad you may just get an upset stomach.
If the chips are expired and taste really bad then you should throw them out but if they just have lost some of their flavor and are not expired for very long then they are okay and safe to eat and will not make you sick.
You can still eat expired chips.
Chips that are expired may not taste as good as fresh non expired chips but as long as the expired chips have remained sealed the expired chips are safe to eat.
As long as the expired chips don't have any mold or really bad taste to them you can safely eat the expired chips.
There's a discount food store hear in my town that sells foods that are near expiration date or have expired but are safe to eat.
I buy canned foods that are expired or about to expire and even chips that are about to expire or have expired.
I've eaten the expired chips and other expired food and never have gotten sick from it.
While it's best to eat the chips before expiration date you can safely eat them.
When chips have gone bad they will taste really bad and then you wouldn't want to eat them.
Usually though if the chips are only a year or less expired they are still okay to eat.
Once opened a bag of chips will go stale within a few days if you don't seal the bag back up.
Once you open a bag of chips you should use a chip bag clip to seal the bag up.