How to Disable Jetpack Mobile Theme
All Sparrow&Snow themes are 100% mobile-friendly, so there is no need to use a mobile theme plugin or to enable the Jetpack’s Mobile Theme feature.
Sometimes, however, the Mobile Theme feature from Jetpack is automatically enabled or by mistake, and your website may look like this or something like this:
You can disable this feature from Jetpack Settings page, from the dashboard jetpack > Settings >Writing Tab
Find the option “Optimize your site for smartphones” and turn it off.