Foxtail? Any idea?

yeah, definitely spiraling out in a few spaces... this can be genetics. it can be too much heat or too little light... sometimes it fills in densely, other time ti reamins larfy -- the larfy stuff you can just trim off like a sugar leaf during harvest if you want. leave the well-formed nubs. you can usually see a difference between the two outcomes early on.. number of whit hairs.. is it just a twig? etc.. looks a bit leafy, maybe drop light 1-2 inches? that also can be gentics, but could be a sign the plant needed a bit more light at some point. take that suggestion as a grain of salt... observe and react. the plant always dictates. not all colas will form a perfect shape.. and as long as it isn't larfy, it's going to be just as good of quality as the rest of the plant.