I've accidentally clicked the never show
option for pretty print tool on Chrome when I was debugging an website and can't find the option to reactivate this feature again. Looked all over preferences and Googled it already, still no clue.
I'm not sure what panel of DevTools you're looking at. If it's the Sources panel, you can manually enable or disable pretty-printing by clicking Format.
In general, if you see that icon anywhere, clicking it will enable or disable pretty-printing.