As a matter of fact, it is. Don't take her putting the egg under her as a sign of going broody though. Most if not all of my hens do this, and they haven't gone broody once in their life
Article 'foldable wire dog crates - a good tool for every chickeneer' https://www.backyardchickens.com/articles/foldable-wire-dog-crates-a-good-tool-for-every-chickeneer.72619/