What sort of pizza sauce? The usual? And did they sprinkle the chocolate shavings like other toppings? (I presume they used shavings - chunks would not do a correct melty thing.)
Artisanal hand tossed thin crust, the sauce was a thin sauce paired with thin slices of tomato ala margherita. and the chocolate was laced over the top, thinly like they poured it on like a confectioner would do on handmade sweets.
CC