Certified GKH Gardening Expert
It appears that they are searching for light. These are meant for bright, full sun. Anything less than that will cause what you are seeing here. Unfortunately, cutting them will kill them, since that is their only point of growth, though they will reproduce by pups if cared for properly. Just get them into much brighter lighting and they will do fine.
This article will help you to care for these plants: https://www.gardeningknowhow.com/ornamental/cacti-succulents/hens-chicks/growing-sempervivum-plants.htm