Greetings @theking24 that pizza looks delicious, I had never seen butter added to the pizza, I imagine it gives a great touch to the vegetables and the dough, I will try to prepare your recipe, it is the perfect dish to share and enjoy Christmas with the family.
You should definitely try it! I hope you and your family will love it and enjoy a good Christmas eve! Don't go too heavy on the butter though or it'll taste too heavy! haha