Prepare the Ooni Oven - If using an Ooni Oven, preheat it according to the manufacturer's instructions. Make sure the oven is at the optimal temperature for pizza baking to ensure a crispy crust and even cooking. If using a different oven, preheat it to the highest temperature possible.

Roll out the pizza dough - On a floured surface, roll out the pizza dough into a circle of your desired thickness. Aim for a thickness of about 1/4 inch for a crispier crust. If you prefer a thicker or thinner crust, adjust accordingly. Transfer the rolled-out dough to a pizza peel or a greased baking sheet.

Melt the dark chocolate - In a heatproof bowl, melt the dark chocolate using a double boiler or in short intervals in the microwave, stirring frequently to ensure it melts evenly. Be careful not to overheat the chocolate as it can scorch. Once melted and smooth, set aside.

Top the pizza dough with chocolate - Spread the melted dark chocolate evenly over the rolled-out pizza dough, leaving a small border around the edges for the crust. Use a spatula or the back of a spoon to achieve an even layer of chocolate.

Arrange the fresh strawberries - Slice the strawberries and arrange them in a single layer over the chocolate-covered pizza dough. Be creative and sprinkle them evenly or create a pattern for an elegant presentation.

Bake the dessert pizza - Transfer the prepared pizza into the preheated oven and bake for about 8-10 minutes, or until the crust is golden and crisp. Keep a close eye on the pizza as the baking time can vary depending on the oven. Once baked, remove from the oven and let it cool slightly.

Dust with powdered sugar - Using a sieve or sifter, gently dust the dessert pizza with powdered sugar. This step adds a touch of sweetness and a beautiful finishing touch. If desired, you can also garnish with fresh mint leaves for added freshness.

Serve and enjoy - Slice the dessert pizza into wedges and serve it warm. This delightfully decadent pizza is best enjoyed fresh out of the oven when the chocolate is still gooey and the strawberries are juicy. It's a crowd-pleasing dessert that will leave everyone wanting more!