The combination of ham and pineapple on a pizza can be very tasty because the sweet and tangy flavor of the pineapple complements the savory and salty flavor of the ham. The combination of these two flavors can create a delicious balance on the pizza. Additionally, the texture of the pineapple can add a nice contrast to the softness of the cheese and the chewiness of the ham. Many people also enjoy the way the flavors of ham and pineapple interact with the tomato sauce and cheese on a pizza. The combination of ham and pineapple on a pizza can be a delicious and satisfying choice.