Pretty awsome Stonedgolem!
At wich date did you germinate the biggest one in the last pics and did you pregrow her under lights or has it been there from seed?
Considering the 3th last pic with the faint coloured leafes:
Most likely N and Mg deficiency and a slight Ph problem too.
Evenly spread some (1.5 to 2 )kg of chickenshit pellets mixed with a couple of dl compoststarter up to 2.5 , 3 mtr in diameter away from the plant.* thats where the feeding ends of the roots are now.
Some garden chalk and woodash usually hold some Mg too, so I would personaly add 1kg chalk and a liter woodash in the mix with the pellets and a cup of PK artificial lawn fertiliser too.
Before the end of season, Rain will slowly still wash some of it down and the compost starter will take care of the pellets.... but you got to do it now!
Its going so good, wouldnt want your beautifull buds to suffer more nutrient uptake later on.
Tnx for pix mate, all best of luck.