some of that looks genetic... not too uncommon. i had some where half the leaf along vein was that bright yellow.
that being said this thing looks additionally retarded, lol.
leaves curling.. try reducing fee slightly, maybe riase the light 4-6" and see how it reacts.
the bright yellow portions are a genetic trait though... "Variegation" -- https://www.lamota.org/en/blog/five-genetic-abnormalities-affect-cannabis-leaves/
the picutre they give looks more like bleaching.. i can't recall my diary that had it.. looked like yours but healthy leaves otherwise. i'm sure it impacts photosynthesis but nothing we can do about it.