I've always been a passive observer of the liturgy wars since I really don't understand it enough to have strong opinions. But with pizza, I'm a partisan traditionalist. The Shrine of the Holy Whapping has the liturgy wars today set to pizza (excerpt):
. . . but for a brief period in 1967, it looked as if Traditional Roman Pizza would vanish forever from the Vatican cafeteria. On one momentous day in October of that year, Paul VI's special commission on the Holy See's food services (informally nicknamed "Dominus Pizza") introduced an American innovation called "Chicago Deep Dish" to the Sistine dining room in the Apostolic Palace, explaining that it would be fine-tuned ad experimentum in order to permanently replace the old-fashioned, thin-crust traditional Italian pizza, made according to recipes developed organically, and in continuous use since the eighteenth century. (snip)
Progressives thundered against the thin, insubstantial, flimsy crust of the antiquated Italian pizza, with its insufficient quantities of dough (as well as the unchanging one-year topping cycle), while traditionalists fulminated against the Americanized Novus Ordo Pizzae. One early article by anti-Deep Dish critic Michael Davies even went so far as to claim the Novus Ordo Pizzae was, in fact, not a pizza at all, but a dish called a "raised pie"--suspiciously associated not with Italy, but with the Protestant nation of England. . .
Some cardinals began to start installing ovens in their own private apartments, and a few determined laymen began to frequent illicit pizzerias set up by the increasingly belligerent Society of San Marzano.
The whole article is worth your time and so is checking back with the Whapsters regularly.