Preheat oven to 500 degrees. Place pizza stone inside to heat up with the oven. If you don’t have a pizza stone, use an upside down cookie sheet.
Spread pizza out into a 12 inch circle or a free form rectangle on parchment paper. Melt butter in microwave and stir in minced garlic. Spread garlic butter over pizza dough. Sprinkle with cheese. Top with green and black olives as well as the artichoke hearts.
Using the parchment paper to transfer the pizza, place onto hot pizza stone. Bake 8-12 minutes or until crust is golden and cheese is bubbly. Top with diced tomatoes and onions. Cut and serve.