Hi and welcome to the forum.
Sometimes a post doesn't get answered immediately here, it's nothing personal. There tend to be fewer eyes on the forum anyway at times like Friday nights, too.
Another reason a post doesn't get answered immediately is that maybe few people have advice to offer on the particular question. Honestly, I never even considered the issue with our chicken coop. However, our coop is in the middle of a yard full of trees next to a taller garage, so I think lightning striking the coop in the middle of all these taller objects is a low risk possibility.
Certainly, if your coop is the highest object in an area, I'd think about grounding. But, sorry, I have no particular knowledge about that subject to offer.