Do a secondary click in the Google Chrome (click and hold or click by placing two fingers in the trackpad). There should be an option that says "Start at Log In"or something similar with a checkmark on its side . Just select that option and the checkmark should disappear. Reboot and check if that work.
If that didn't worked do the following:
- Go to the Apple menu and from the dropdown click "System Preferences".
- Click the "User Accounts" category.
- Select the "Log In items" header in the screen.
- Chrome should be there, select it and then go to the bottom of that windows and hit the minus sign.
- Quit System Preferences.
- Reboot (to test out)
That should fix the problem. Good Luck.