Prepare the pizza dough - If using store-bought dough, follow the package instructions to bring it to room temperature. If making your own dough, combine all-purpose flour, water, yeast, and salt in a mixing bowl. Mix until a soft dough forms. Knead the dough on a lightly floured surface for about 5 minutes, until smooth and elastic. Place the dough in a greased bowl, cover it with a clean kitchen towel, and let it rise in a warm place for about 1 hour or until doubled in size. - For a flavorful variation, you can add some spices like garlic powder, dried oregano, or chili flakes to the dough while kneading.

Marinate the chicken - In a mixing bowl, combine boneless chicken pieces with yogurt, ginger-garlic paste, red chili powder, turmeric powder, garam masala, and salt. Mix well to evenly coat the chicken. Cover the bowl and let it marinate in the refrigerator for at least 1 hour, or preferably overnight, for the flavors to develop. - For a vegetarian version, you can substitute chicken with paneer or tofu. Adjust the marinating time accordingly for the chosen substitute.

Preheat and prepare the pizza oven - If using an Ooni pizza oven, preheat it according to the manufacturer's instructions. If using a pizza stone in a conventional oven, preheat the oven to its highest temperature (usually around 500°F or 260°C) and place the pizza stone on the middle rack. Allow the oven and pizza stone to preheat for at least 30 minutes to ensure a crisp crust. - For an extra smoky flavor, you can add some wood chips or chunks to the Ooni pizza oven.

Roll out the dough and assemble the pizza - On a lightly floured surface, roll out the pizza dough into your desired shape and thickness. Transfer the rolled-out dough onto a pizza peel or the backside of a baking sheet dusted with flour or cornmeal to prevent sticking. Spread a generous amount of butter chicken sauce over the dough, leaving a small border around the edges. Top with marinated chicken, red onion slices, and sprinkle mozzarella cheese on top. - For a crispier crust, pre-bake the pizza dough for a few minutes on the hot pizza stone or in the Ooni pizza oven before adding the sauce and toppings.

Bake the pizza - If using an Ooni pizza oven, carefully transfer the assembled pizza onto the preheated pizza stone inside the oven. Cook for about 2-3 minutes, or until the crust is golden brown and the cheese is bubbly and melted. If using a conventional oven, carefully slide the assembled pizza from the pizza peel onto the preheated pizza stone in the oven. Bake for about 10-12 minutes, or until the crust is golden brown and the cheese is melted and slightly browned. - Keep an eye on the pizza while baking to prevent any burning. Adjust the cooking time according to your oven and desired level of crust crispness.

Garnish and serve - Once the pizza is cooked to perfection, remove it from the oven. Sprinkle fresh cilantro over the top and squeeze some lemon juice for an extra tangy kick. Slice the pizza and serve hot as a delicious fusion delight to be enjoyed! - Feel free to garnish with additional toppings like chopped green chilies, sliced bell peppers, or diced tomatoes for added freshness and flavor.