How would Jutland change if German Zeppelins found and tracked the British fleet first?
Short answerThe High Seas Fleet would probably turn for home, because advance warning reveals an engagement it cannot win and prevents Jutland from occurring.
NotesThe German fleet brought fewer capital ships in total than Britain brought dreadnought battleships, and it lacked comparable numbers of the heaviest guns. Its viable strategy required isolating and destroying one British element before the whole Grand Fleet arrived. Zeppelins that reveal Jellicoe's concentration remove the chance of surprise rather than creating a new German advantage. Scheer and Hipper would therefore turn for home instead of accepting an attritional fleet action. Better reconnaissance prevents Jutland rather than providing a path to victory at Jutland.