Leaf discoloration pattern.

Hello So I've personally with my grows seen this when I had light stress and then ph fluctuations. With the ph fluctuations it actually ended up locking out various nutrients too so it was a whole bag of problems...potassium, calmag etc. So I'd look at your plant and see if there's much of that coloring in the lower leaves, or leaves that are out of direct light and if they're green and healthy looking then it's most likely light stress.

this is a ph issue, in turn is causing the plant to look funky. easy to fix though, flush the plant until your run off is at 6.0 let grow medium dry out a bit, continue to feed using less and with corrected ph. your plant has a suggested flower time of 35 days, remember that as if it is true then the plant may also be finishing her cycle up, hope this helps

Check your runoff ph and ec levels and fix what needs fixing. This tells you where your out of whack. Not sure of the age of your girls in flower. If their near their end then dont worry. Cheers