01 - Heat 1 tablespoon olive oil in a large skillet over medium heat. Add the sliced beef sausages and cook, stirring occasionally, until browned on all sides, about 6–8 minutes. Transfer sausages to a plate and set aside.
02 - Add the remaining tablespoon olive oil to the skillet. Add onion and sauté for 2–3 minutes until slightly softened.
03 - Add the red, yellow, and green bell peppers. Cook, stirring frequently, until the peppers are tender but still crisp, about 5 minutes.
04 - Stir in the garlic and cook for 1 minute until fragrant.
05 - Return the browned sausages to the skillet. Add the drained diced tomatoes, oregano, smoked paprika, chili flakes, salt, and black pepper. Mix well.
06 - Reduce heat to low, cover, and simmer for 10 minutes to allow flavors to meld.
07 - Uncover, increase heat to medium-high, and cook an additional 2–3 minutes to reduce excess liquid if needed.
08 - Taste and adjust seasoning. Garnish with fresh parsley before serving.