Tuna Pasta with Tomatoes and Mozzarella

Bring salted water to a boil in a large pot, add the pasta, and cook for 15–16 minutes over high heat. Drain after cooking.

Meanwhile, heat a large pan with olive oil over medium heat, add the onion, garlic, and tomatoes, and sauté for 2–3 minutes. Then reduce the heat to low, add the tuna, canned tomatoes, lemon juice, salt, pepper, oregano, and Parmesan, and cook for about 10 minutes, stirring occasionally.

After cooking, remove from heat, add the pasta, and mix. Divide the mixture into individual portions, add chives and mozzarella, and serve.