Hello! looks like a loser seed. I have experienced plants that have recovered to be the largest and most beautiful and others that were better discarded. evaluate according to your spaces, times and needs. if you have space to germinate another seed maybe it is better to do it immediately, so as to avoid further delays, however the choice is to be made now. I with my spaces would plant another seed and evaluate later, if you do not have this possibility you have to decide whether to risk a little or throw some seeds and start again.
Hope to help you and sorry for my english ✌️🏽💪🏼 Good luck , keep on growing