I’ve never encountered a pizza shop that’s using fresh pineapple for its hawaiians, nor is the pizza exposed to the enzyme long enough for it to have any real effect. When I do pineapple chicken I marinate thinly sliced chicken breast with pineapple for like 4 hours and it definitely has a tenderizing and satinizing effect, but the half hour between it going on your pizza and the pizza going in you isn’t time enough for any real effect.