Pineapple in carrot cake sounds weird to me, but my wife says she's seen it. Some people put coconut in carrot cake, and she usually won't eat anything with coconut in it, though recently she's been willing to eat the frosting on a Germans sweet chocolate cake.
I made sourdough pan pizza on Saturday. The crust came out particularly well, probably because I fed the starter yesterday after making the cracker dough. I also brushed the dough with olive oil before adding the sauce and toppings.