1 plant out of 5 not showing any hairs all northen lights

Got a nanner in a couple of those pictures, if not the same bud. tweeze/pluck it out. Nanners are male anatomy. They don't typically have a full compliment of pollen production, but can cause a few seeds. If it's only happening at the top, might be a tad too much light. You'll want to inspect entire plant for more of them. It isn't a tragedy unless you find a full pollen sac as opposed to lone nanners. not showing hairs? they are there. pistils die as they get color. might have coiled up if toward ripe end, but still there. That "1" maybe be on a faster track than the rest. Start scoping its trichomes. is that one in picture #1 and #3? definitely ahead of pic #2 and #4 buds. the others still have some ripening to do before you bother scoping their trichomes.