I'd be more leaning towards nams thinking... Looks almost like nute burn of some sort as I don't see those spots on the lower leaves... If it was fungi it would or will spread quickly and more Of the plant would be affected, any chance of getting some more pics to see the whole plant? As nam said have you splashed nutes on her or anything? What are you feeding do you know at what strength/ec or ppms? Do you have any other plants doing the same thing (if not I'd lean more towards some build up of some sort... I noticed the slight clawing of the leaves affected) what type of lights? What strain? How far are the lights from canopy? Just a few questions off the top of my head
:ksrma Cloud: that the problem is contained and doesn't spread... Keep us updated!
:Sharing One: