I'm prepping my class on horror tomorrow by reading Schelling, and Zizek on Schelling. I like this Kantian, Schellingian Zizek. A Zizek of irreducible gaps between appearance and existence, which is just what OOO is. He argues very deftly that objects just are ugly, insofar as their existence is always in excess over their appearance.
In this sense, as I've been arguing in Realist Magic, beauty is a kind of death that seeks to destroy this ugly imbalance of existing, by harmonizing appearance and existence—the ultimate harmony of course is destruction or death.