Looks fine to me. My first leaves are always a bit weird. I find its from me giving them to much water and the medium not being aerated enough.
The new growth looks fine and I don't think you have to worry about anything, over thinking it.
Dude you're all good. Those first leaves are just derpy lol the roots are figuring out what they're doing and where they're going. Leaves can sometimes look a bit wavy and weird til week 3 give or take. Like "sirduke..." said just raise the humidity a bit but all else looks great!
Wenn ich deinen Report früher gesehen hätte würde ich dir gesagt haben das sie mehr strech hat. Bin aber gespannt wie dick die Main Buds aussehen. Topped waren die Buds schon fett.