Update: she is doing much better after just a few days. She looks confident and happy. I know it's too soon for her feathers to recover but I swear they look better.
She and her four pen-mates were out of the pen for a while and she was the first one I put back. I moved one of the other four back into the pen so three were yet to come home and it was starting to get dusky.
Suddenly she started cluck-cluck-clucking very loud. It didn't sound like an egg/escort song so I stopped and looked to see what she was doing. She went rrrrrrrawwwwwWWWK!
super loud.

She's a sweet, friendly hen and I had never heard her be loud like that. Cluck-cluck-cluck-cluck rrrrrrrawwwwwWWWK! Cluck-cluck-cluck-cluck rrrrrrrawwwwwWWWK!
I realized she was calling the remaining three hens home to roost for the night. "Where are you guys? Are you lost? We're all over here! It's going to get dark soon. Tsk, tsk. Come home!" She felt connected enough to the other four to call them home at dusk.

That's not an annoyance but I wanted to follow up with a little good news.
Annoyance: I got some good scratches on my arm carrying one of the EEs today. She sometimes kicks unless I hold her against my chest, I guess she feels safe there, and I didn't move her there quickly enough so I got kicked and my arm is all scratched, it looks like I own an angry cat or something (I don't own a cat). She lays beautiful large green eggs, though, so she's forgiven!