Dry the pot and add oil; heat over medium heat. Add shallots and garlic; cook, stirring occasionally, until the shallots soften, 3 to 4 minutes. Add crushed tomatoes and their juice; bring to a simmer. Cook for 5 minutes. Add the pasta, the fresh tomatoes, chiles, arugula, oregano, crushed red pepper and ground pepper. Cook, stirring, until hot, about 2 minutes. Serve topped with Parmesan, if desired.