Malformation

I had the same problem with one of my seeds, took 2/3 weeks behind others to flower but it turned massive, i gave it PH balanced water about a week or so as soon as I recognized deformation . Good luck

I agree with smoke24.. Giving nutrients to seedlings does more harm then good.. sometimes plants flip around or handle it quite well. like the one plant you have.. a lot of the time.. they suffer..

I agree with Blocc420. Judging by your profile you know what you're doing.. If they're new seeds, then I'd contact the breeder.. 1 out of 10 is really bad for their reputation. They'd have to look at the batch of seeds where yours are from, or risk losing a lot of costumers. - If they aren't new seeds however. You might have fucked up with storing them. And nothing breeder can do about that.

If you are giving them nutes stop. Seeds have all the energy they need to grow for at least 10 days. To much fertilizer will stunt or kill sprouting seeds. Just plain water for these and see if they come around. Happy growing.