While gross when it happens to you, today it seems this is more mildly interesting than wtf as this happens with every processed food in every country across the world.
I got a roll of cheesey pringles with a chunk of cheesey seasoning that took up a quarter of the roll. I emailed images to Proctor & Gamble where they gave me a coupon for a free one. So perhaps you can contact the makers of those and get a free bag.