The Walking Dead is full of talented performers who helped to create an expansive dystopian world filled with undead monsters, and some of the actors also got to take control behind the camera. It's not uncommon for actors to turn their hand to acting, with many getting to experience work as a director on long-running shows that they have appeared in. With the actors already familiar with the team and their co-stars, and getting to take control of the directing from right in the middle of the action, it makes sense to take a step in that direction for any actors who are so inclined.
https://screenrant.com/walking-dead-episodes-directed-cast-members/