Debug common network traffic with Chrome DevTools interface.
It uses Betwixt as mitm proxy interface to capture desired network traffic.
This will create a menu item under Tools. It will try to download Betwixt for the first run.

https://support.apple.com/en-us/ht202480
https://kb.k12usa.com/knowledgebase/proxy-settings-on-a-mac-os-x
Enter localhost for the server and 8008 for the port.

https://github.com/kdzwinel/betwixt/blob/master/docs/https.md
Open network debugger, switch to the new network location and done!
