Pour flour onto a plate. Place your dough ball onto the flour, flipping it to coat both sides. Gently stretch out the dough to form a 13″-14″ circle. A rolling pin can be used if necessary. Place the stretched dough on a lightly floured pizza peel to prevent sticking.
Evenly distribute the fresh mozzarella slices on the dough. Using a spoon, add dollops of chimichurri sauce across the pizza, making sure to spread it around and between the cheese slices. Layer the sweet tomato slices over the cheese. Sprinkle the thinly sliced onions over the top.
Preheat the Ooni to its highest setting for 15-20 minutes.
Once preheated, adjust the temperature using the slow-bake hack by pushing the dial and setting it to 11:00 (low flame).
Slide the pizza into the oven with a quick jerky motion using your pizza peel.
Turn the pizza 45 degrees every 45 seconds to 1 minute with the turning pizza peel. When the side closest to the flame is golden and the cheese is melted and bubbly, it’s time to turn.
After 4 minutes, your pizza should be perfectly baked. Remove it using the pizza peel, slice it into 4-6 pieces, and enjoy!