I contacted Bersa, and they offered to send me replacement parts, or send the gun in to a gunsmith and have them replace the parts.
I also contacted the FFL who sold it to me, as the distributor, Davidson's has a lifetime replacement guarantee. He said he would contact Davidson's and let me know what they can do since they are now out of stock on that exact model. Maybe I'll hear from him tomorrow.
Is there any risk taking the first option, as that would mean I would be replacing the slide?
It suck to have to deal with this as the flaking so far is very minor, but I don't know how much worse it will get.