that just looks to me like the plant slowed growth and the leaves have become a bit retarded,i found a lot like that towards the end of my scrog,think it occured after 2nd growth spurt came to an end

on the upside i found these bits to be super sticky,more so than the rest of the bud,really full of resin and the stone was better than from the regular looking buds

i've been meaning to ask/mention,what spray are you using on your plants?you seem to spray them an awful lot,not having a go but,did you say it was a spray that was suitable for edible crops up until the day of harvest??or is it specifically for cannabis

because if it is just for edible crops,you need to keep in mind that you aint gonna be eating this crop,and nobody gets lung cancer from eating tobacco

guess what i'm saying is be careful,don't want you fucking yourself up smoking some dodgy chemical that's safe to eat

still looking good man