Watching Channels DVR on second TV

When I try to watch Chanel’s DVR on my second TV the picture is shaped like my phone I’m assuming because I’m casting from my phone on ChromeCast. Can I expand this picture to my full screen or is there a better way to watch Channels DVR on my second TV?

You would need to attach an Apple TV, Android TV or FireTV and run Channels DVR app on it.

Fire Stick worked great!

Thanks