“our ancestors did not eat Pizza in Europe “
Pizza is actually an ancient food originating in the Mediterranean region, although it didn’t get tomato sauce until about 500 years ago. (Tomatoes are native only to the Western Hemisphere.) The word pizza is relatively more recent, but covering flatbread with cheese, olive oil, and seasonings is documented in ancient times. I guarantee you that our ancestors in Eretz Yisrael ate it long before there were any Jews in Eastern Europe at all.