In a small bowl, combine warm water, sugar, and yeast. Let it sit for about 5-10 minutes until it becomes frothy.
In a large mixing bowl, combine flour and salt. Make a well in the center and add the yeast mixture and olive oil. Mix until a dough forms.
Knead the dough on a floured surface for about 5-7 minutes until smooth and elastic.
Place the dough in a greased bowl, cover with a damp cloth, and let it rise in a warm place for about 1 hour or until doubled in size.
Preheat your oven to 475°F (245°C).
Roll out the dough on a floured surface to your desired thickness and transfer it to a pizza stone or baking sheet.
Spread the pizza sauce evenly over the dough, leaving a small border around the edges.
Sprinkle the shredded mozzarella cheese over the sauce, then layer the mushrooms, artichoke hearts, black olives, and ham on top.
Sprinkle dried oregano and red pepper flakes (if using) over the toppings.
Bake in the preheated oven for 12-15 minutes, or until the crust is golden brown and the cheese is bubbly.
Remove from the oven, let cool for a few minutes, slice, and serve.