Back in the 50's, pizza was delivered to Downey homes in a small 3-wheeler delivery cycle, with a hot oven in the rear of the motorcycle.
Pineapple was an option, along with chopped hot dogs and some little fishes; they were all good.
Furthermore, Silver Saddle restaurant served custom pizza wedges, part of their buffet weekend luncheons. I think they might have been created by Granada Pizza, which was adjacent to Silver Saddle, when George Putnman of TV news frequented. Mike and Marie Granada were my class mates at St Raymond's.
During that time, there was another pizza in town, San Fran style, deep dish, stuffed pizza. I think it had mushrooms and Spanish style quiche.