Chickens love herbs and they have a lot of nutritional benefits. However i have considered planting herbs before but decided against it because I doubt the plants would survive very long. I left a pot plant of basil out in my garden once and found it stripped bare within five minutes. The plant died shortly after. I'm no gardener but if I were to try to grow my own herbs and veg for the chickens to eat, I would have to do it in a separate area or greenhouse where the chickens would have only limited access or where you could let the plants grow abundantly before the chickens get to them.