There is no option in Chrome that allows you to disable incognito mode. But there is another way to hide the incognito mode Chrome iPhone. You can also entirely deactivate the private browsing of your iPhone. Launch the Chrome app on your iPhone todisable incognito mode Chrome iPhone. Now, tap the square icon to switch incognito and regular windows. At this point, you can tap the X icon to close incognito mode on any series of iPhone. If you do not wish to close it completely, you can switch windows between regular and incognito.
See also –
Reverse Google Image Search on Various Devices
Resolve Google Chrome Sync Paused Problem