My work pretty much requires that my images open by double-clicking with Windows Photo Viewer (because Windows 10's Photos app is crap). –Clonkex
Since you have the constraint on the default JPG viewer not being able to be changed, then you can change the default editor to be Google Chrome instead.
Once this is complete via the registry change described below, when you have all applicable JPG files selected, right-click, and then select the Edit option. All the files will open with Google Chrome.
The Registry Change
It seems the Registry Editorexport of this option dumps in HEX value so I'll put the steps to change from the Registry Editor GUI.
The Key Path
HKEY_CLASSES_ROOT\SystemFileAssociations\image\shell\edit\command
Change the value to the full path of the Chrome.exe application on your system followed by "%1" just as shown in the below screen shot:
"C:\Program Files (x86)\Google\Chrome\Application\chrome.exe""%1".
