Why is my HLS stream not playing in Chrome on Android?

The most common reason for this issue is that the stream is being served over HTTP.

Direct playback of HLS stream in Chrome on Android requires that the stream is served over HTTPS from Wowza Streaming Engine.

Wowza Engine customers get a free SSL certificate and domain:
https://www.wowza.com/docs/how-to-get-ssl-certificates-from-the-streamlock-service