Ya, that looks like more then just a cal-mag deficiency. I would say
@The8thChevron has it closer. I would be checking your buds very closely. Look at the bud at the base of where the yellow, spotted leaves are, pull the buds slightly apart even to check. You do not want to see any brown or weird green colour stuff. I had your problem happen to a Kushy kush plant before that had some massive dense buds on it, then the leaves started doing what your are doing late into flowering, turned out to be bud rot from not enough ventilation around that particular plant. Hope that’s not the case, but good luck. If it is it’s pretty much garbage... a UV black light will help to, shine it in the buds cracks and crevices and any rot or mold will glow. Hope this helps. Cheers💨