Preheat oven to 500°F (or 475°F will do). Line the bottom of a baking sheet with foil paper. Or you can just use a pizza pan, without foil. Set aside.
Heat a small sauce pot over medium heat. Add 1 tablespoon olive oil and sauté the onions and garlic with a sprinkling of salt and pepper. Cook for a few minutes until translucent. Add the diced tomatoes, with their juice, and cook for a few minutes more. Add in the fresh oregano and basil, stir and reduce the heat to low. Taste and adjust seasonings accordingly. Simmer for about 10 minutes. Remove from heat and allow to cool.
Heat a skillet over medium-high heat. Add 1 tablespoon olive oil, and the sausage (removed from the casings). Crumble with a wooden spoon and cook for about 10 minutes or until brown and crispy. Remove from heat and allow to cool.
Roll out the pizza dough into a large thin circle. Place on the prepared baking sheet or pizza pan. Drizzle the top with the remaining tablespoon of olive oil. Spread with the pizza sauce you made earlier, adding as much or as little as you'd like. Sprinkle with both cheeses. Top with crumbled sausage and pickled jalapeños. Grind some black pepper if you wish. Bake for about 15 to 20 minutes or until golden brown and crispy at the edges, and the cheese is bubbly and brown.
Cut into eight slices and enjoy! The sauce and browning the sausage can be done in advance and stored in the fridge until ready to make and eat!