Google announced the new security panel for Chrome from v48 in Chrome’s DevTools, this feature can help users easily know the security information for every network connection/request in a certain website, including the certificate info, now it’s been easier to debug what’s the reason why a website didn’t get a green lock on the url bar(A website using https with enough strengh will have a green lock icon).

Screenshots as example (using my blog):

References:

Security Panel debuts in Chrome DevTools
https://developers.google.com/web/updates/2015/12/security-panel

Introducing the Security Panel in DevTools – Chromium Blog
https://blog.chromium.org/2016/01/introducing-security-panel-in-devtools.html