Why has Website Text Size Suddenly Increased While Browsing with Google Chrome?
 

For now, a temporary workaround is to force HiDPI support in Chrome.

To do this:

- Right click on Chrome’s shortcut link.
- Choose Properties and then add /high-dpi-support=1 /force-device-scale-factor=1 to the existing target path link to chrome.exe.
- Be sure to close all running Chrome processes from the taskbar before using the shortcut with the new flags.

http://www.howtogeek.com/195766/why-...google-chrome/