Even if the dough has apple juice usually it is concentrate and is not enough to be considerd pas kisnin, even if there is rov of real juice, pashtus its not enough.
Besides there is a machlokes rishonim in regards to the shutah that pas kisnen is “memmulah” filled if its only when its filled with sweets or even a mainstay, the shulachan aruch paskens acording to the mg”a that “pashtidah” is pas gamur, pizza is exactly pashtidah so pashtus pizza is not pas kisnin