Those are future stems/branches. Leave them alone. They are NOT abnormal. By the way, they are too little to have fan leaves yet.

They do look good, when did you germ them?
LolaGal Reviewed by LolaGal on . help!! extra leaves on my seedlings? maybe im just a dumbass but idk what these little leaves are? there is extra leaves connected to the stem from my fan leaves... Rating: 5