First, prepare the toppings. Add ground sausage to a skillet, season with salt and pepper, and cook over medium-high heat until browned; then drain and set aside. In the meantime, fry bacon over medium-high heat until crisped on both sides; then drain, chop into small pieces, and set aside. If using large pepperoni slices, cut into halves or quarters.
Preheat the oven to 500 degrees. Drizzle olive oil over a large sheet pan, then dust your work surface and your hands lightly with flour. Stretch out the dough on the floured surface into a large rectangle that's the same size as the sheet pan. Then transfer the dough to the sheet pan and adjust shape as needed to bring the edges of the dough to meet the edges of the pan.
Top the dough with an even layer of pizza sauce, leaving about a half-inch crust around the edge. Then sprinkle shredded mozzarella evenly over the pizza. Top with ground sausage, bacon bits, and pepperoni.
Sprinkle a pinch of sea salt over the pizza and bake until edges are crisped and cheese is browned and bubbly, about 18-20 minutes.
Let cool for about 2 minutes before slicing with pizza wheel or large scissors. Slice into 12 squares and serve hot.