[dmforcier]

There will be unripe seeds in unripe peppers. But there will be unripe seeds in over-ripe peppers, too. Just a better ratio.

I counter this when I select the seeds for sending or planting. Only the fattest, best colored seeds get the honor. Avoid seeds that are smaller than their cousins, and that have a dark germ. (The latter have likely been invaded by mold.)