You may have stuffed around installing something by clicking accept instead of skip on a certain application. Been through a couple of these problems in the past.
You should be able to remove most of them through the Uninstall area in the Control Panel if they are third party, or a google search on how to remove extensions from Chrome may help if you cannot remove them with that method.
Would also scan your comp, probably with Malwarebytes, just to make sure some stuff isn't interfering or hijacking your Chrome