What's going on?

i would stop feeding any nutrients and start doing a flush, you most likely have a salt build up going on from all the feeding before up to this point. picture is hard to see using the led grow light. so flush until you see a run off of water, check your ph at run off flush until run off is at a 6.0ph let pot dry out a bit, feed at half of what you were giving her after the grow medium dries out, hope this helps

Very tough to see those pics. Are they in bud? If you think you fed to much you may need to flush if you see things going south. Cheers