Can you rearrange so that it's impossible for one bird to corner another?
That's what I do for my chicks during integration -- make a lot of tunnel-like places where a chick can get in one end and out the other and hide out of sight.
Do you have plenty of "clutter" in your chickens' environment to give birds plenty of ways to get away from each other?
https://www.backyardchickens.com/threads/a-cluttered-run.1323792/