I don't know about too much nutrition, but looks like lack of nitrogen. I'd definitely make sure ur ph pen is adjusted properly. I had a auto flower that transitioned to flower n it yellowed slightly so I adjusted my nitrogen and it fixed it. U have to determine how much of something you gave them. Too much of something and not enough of something else. Those plants need nitrogen for photosynthesis. I hope u fix it, but might be a learning lesson for the next time. Good luck.