Special one

From what I can see looks like calcium add a little Cal mag

In your stage of Grow, i wont be concerned by the look ogf the plants. to me it lokks like a "lightburn" by having to much or the light to close to the plants. but allover i see no big problem with your ladies. greetings

Hello my friend, it can happen that a female plant created a few male flowers and pollinated your buds. It happened a few times to me and I made bubble hash from it. You can also make edibles, rosin or thc oil from the buds. Or just get the seeds out of the weed aftrr grinding it. It will still make you high and there is not much more you can do about it now. Enjoy the weed buddy!

If the seeds are mature, you may have had pollen flying around your growing area during flowering. This can happen if you have a plant that has made male flowers that you didn't notice or on a previous crop and didn't completely clean your tent before moving on to the next crop. If the seeds are really small, this may be a natural reaction by the plant, which is so desperate to reproduce that it forms male flowers in the buds. Anyway, you should always watch your plants for male flowers throughout the flowering period, so that you can remove them as quickly as possible. Under the branches at the beginning, in the buds at the end.

GMS is right....it's nature "finding a way". It's not all that uncommon. Now if it's more than a couple seeds there might have been something going on.