Preheat oven to its hottest temperature (typically around 500 to 550 degrees F).
Flour a clean work surface and stretch the dough into a roughly 10-inch circle. Start by flattening it into a disc and gently pressing around the edges to form a small edge, then use two hands underneath the dough to stretch it from the center outwards. You can use two fists to gently coax it into shape, with your hands at a slight angle to let gravity help you.
Next, prepare the toppings. Heat olive oil in a skillet over medium heat, then add minced garlic and cook until fragrant, about 30 seconds to 1 minute. Add chopped artichokes, season with a pinch of salt and pepper, and cook until softened, about 3 to 4 minutes. Then add spinach and cook until it just begins to wilt, about 2 to 3 minutes. Season with another pinch of salt and pepper and remove from heat.*
In a small bowl, combine shredded mozzarella and grated parmesan cheese until evenly mixed. Set aside.
Once the oven is preheated and your toppings and dough are ready, open the oven slightly to let some heat escape and switch on the broiler to HIGH. Close the oven door. Then, preheat a cast iron pan on the stove over medium-high heat for about 5 to 10 minutes.*
Transfer the stretched dough to the hot cast iron and turn the heat to low while you quickly top the pizza. Top first with cheese, leaving about a quarter-inch crust, then evenly distribute the spinach and artichoke topping. Lightly drizzle the pizza with olive oil and then sprinkle with grated parmesan and sea salt.
Transfer the pizza to the oven and cook under the broiler for about 2 to 4 minutes, or until crust is golden brown and cheese is bubbly. You may want to rotate the pan halfway through cooking to ensure it cooks evenly.
Transfer cooked pizza to a cooling rack and allow to cool for at least 2 minutes before transferring to a cutting board. Slice and serve hot.