My bf just sent me this from a restaurant in Germany called The 12 Apostles, every pizza has the name of one. Which Apostle do you think this is?

Yeah, although if you want to be pedantic, 'Jehova' is a medieval bastardisation of the Tetragrammaton JHWH. Because God's name isn't supposed to be said out loud, the Jewish writers used the vowels of Adonai (=Lord) whenever they wrote down God's name, to indicate that the reader should say 'Adonay' instead of God's actual name. Medieval Christians didn't know this, and so when they translated 'Jehowah', it became 'Jehova'. TLDR: Not the "literal" name of God, but a Christian interpretation of it.