The Cowgirls and Moore "mutually agreed to part ways", basically he was fired.
https://www.si.com/nfl/cowboys-to-interview-kellen-moore-coaching-job
Moore served as the Cowboys' offensive coordinator from 2019-22,
and was fired early in '23. Former head coach Mike McCarthy took over play-calling duties once Moore was let go. Since then, Moore has served as the offensive coordinator for the Los Angeles Rams and for the Eagles this season.