Must be genetics…

[Scrappy-doo]

Is it directly under the light or closer than the other plants? Looks taller than all the others in your pic. Ive seen too much light intensity do similar things to leaves. Very common with led's. If this were the issue, you would notice the lower foliage is more normal looking.

 

[hamstring]

I am growing some bubba Kush and have been seeing this same leaf droop on a couple of plants. I have noticed its only after watering and when the RH is in the 70 range. My guess was these wide leaf indicas don't like the high humidity . I also sprayed one of my Bubbas thinking it might PM but not sure really.

The plants that do this seems to perk up , turgid leaves, when the RH comes down and the soil dries out.
Aanecdotally my guess is high RH.

 

[NoiseCTRL]

Is it directly under the light or closer than the other plants? Looks taller than all the others in your pic. Ive seen too much light intensity do similar things to leaves. Very common with led's. If this were the issue, you would notice the lower foliage is more normal looking.

Yes, an high prob that was the problem, i made some changes including raising the light a little bit and maybe that made her recover. I keep having a server error that doesn't let me upload pics

 

[hamstring]

I read on another thread pics not working .

 

[Scrappy-doo]

Yes, an high prob that was the problem, i made some changes including raising the light a little bit and maybe that made her recover. I keep having a server error that doesn't let me upload pics

Good to hear. Lux meters are very helpful. I have 2 and use them all the time.

 

[NEED 4 SEED]

I just sprayed the plant from day 15 with a light mix of neem oil and organic soap

Thats probably it