Growing up Chinese, my introduction to pizza was public school lunches. We got sectioned trays where they could separate each course, like green beans. On the days with pizza, the cooks in the kitchen would slice rectangular portions from a large, tall-lipped cookie sheet. The school lunch slices ran a bit thicker than traditional circular pizza, and they didn’t fit into the largest rectangular section.
Naturally, I eventually tried traditional pizza. I believe that it was Pizza Hut, though I honestly don’t remember if I was at the table or from take-out. What many found to be perfectly normal, I found to be wildly exotic.