I have a few PiZero-W running around the house with node-red. They don't have displays, but I keep a virtual desktop open on my main computer that displays their dashboard in separate browser windows. With Chromium's "resume where you left off" it'd be perfect if Chromium knew about virtual desktops, I have to move them to the virtual desktop manually after I reboot, which isn't often.
An old out of contract cellphone "wifi only" seemed perfect but I've not had much luck with the dashboard webpage staying up with Chrome on Android. Occasionally (once a month or less) I get the "Oops something when wrong on the desktop and need to refresh the page, but on the Android phone its every few hours.
I have run the full Raspbian desktop on the PiZero-W and it is sluggish but it does work. It might be better on an 800x600 panel compared to a 1080p display (fewer pixels to push) but then you don't have much screen real-estate to work with.
My AI system controller/viewer would be about perfect on an 8" android tablet, if I could find one where the webpage wasn't always "Oops" when I do need to look at it (rarely, by design).