I’ve seen plenty of those types of edges before, enough where I’d guess it’s due to poor storage and not attempts at flattening.Received this way if you note the before pic. I knew these were misfits when I bought them, but ya someone else might have already attempted this with these chips.
Also they were completely unusable before this, so if I get a few more good chips from this attempt it's worth it. I don't think these are even the same 20 chips in each photo