Docfishwrinkle is correct. I was talking about unethical breeders who don't go through the steps necessary to get a good stable female when making fem seeds. I am tending to the thought that the plant the seeds came from quite possibly hermied and you did not notice it--it just hermied so bad and so early. Nanners can hide inside the buds and not be visible at all until you harvest...and if you don't know what you are looking at, you wouldn't give them another thought.
However, this is the reason that I try to encourage growers to NOT use bagseed. It is almost always a result of the plant hermying. And the resulting seeds are genetically predisposed to hermying. You having this happen to you twice with these seeds tells you that they are garbage genetics and need to be destroyed (although I realize that yours are not bagseed). But I do believe that you got seeds from a "bad" breeder--LOL, they didn't even know the genetics.