Its close to death with the growing tip dead and brown and it doesnt look like improving any time soon. Not sure how it happened maybe high temps or the medium is crap. Dont even think about cloning it wont have a chance as its very sick and the tip is dead.
The reason this happened is unreliable females and pollen. Did the parents show any hermie traits or were stressed?
Dont use these seeds again and try to learn how to clone with confidence so all your holes will have females and much less chance of very costly hermies.
Im going with heat stress, leaves burn when its hot from light bleaching and the light is a big 1000w. Cool the room to below 80 and they should be much happier.
Salt burn, usually caused by allowing the cup to dry too much too often causing salt build up and nute/salt burn, also when you water you should always drench the medium until runoff and let the plant draw the runoff back into the pot from the saucer. Cant fix it now just make sure to water...