Okay, thanks for that info Chris.
I also know you are a scientist so please don't be offended if these questions seem obvious.
Have you clicked on Extensions to see if there's anything you don't recognise.
I suggest you run a scan with firstly Malwarebytes and then Norton (I believe you said that's what you use)
If they don't find anything you could try opening Task Manager and look through the Processes tab and then the Startup tab and make sure only essential elements are enabled.
If all else fails you can go to Settings in Chrome and at the very bottom of the list on the left is "Reset Settings" - I'd try that.