Are you getting redirected to the site charming-tab.com when you open your homepage and your browser search generates results from Bing? Charming Tab will supposedly change your standard Chrome background to a “charming” one which is a nice random landscape picture. You can also do customizations if you wish to add your own photos.
Be wary though because this new tab is a browser hijacker that will attempt to commandeer your homepage and default search engine to https://www.charming-tab.com. Search results will send you to malicious websites to get money from you or infect your computer further. It may also prevent you from changing your settings back.
Charming Tab is usually installed through bundled software without you knowing. Remove it immediately.