01 - Heat a large, heavy-bottomed skillet or Dutch oven over medium heat. Add the sausage slices and cook until thoroughly browned, approximately 3 minutes. Remove the browned sausage and set aside.
02 - In the same pan, add the chicken pieces. Season liberally with salt and black pepper. Cook until the chicken is lightly golden, about 4 minutes, ensuring it is not fully cooked through. Remove the chicken and set aside with the sausage.
03 - If necessary, add a small amount of olive oil to the pan. Sauté the diced onion, bell pepper, and celery until they are softened, which takes about 5 minutes. Incorporate the minced garlic and diced tomato, cooking for 1 to 2 minutes until aromatic.
04 - Add the Arborio rice to the pan with the sautéed vegetables. Stir continuously to coat the rice grains thoroughly, toasting for about 2 minutes.
05 - Pour in the dry white wine and stir until the liquid has been completely absorbed by the rice.
06 - Stir in the paprika, cayenne pepper, dried thyme, dried oregano, and the bay leaf. Return the previously cooked sausage and chicken to the pan, distributing them evenly.
07 - Begin adding the warm chicken stock, one ladleful at a time, stirring frequently. Allow each addition of stock to be fully absorbed by the rice before adding the next. Continue this process for approximately 20-25 minutes, or until the rice achieves a creamy texture and is al dente.
08 - When the risotto is nearly finished, stir in the raw shrimp. Cook for 3-4 minutes, until the shrimp turn opaque and pink.
09 - Remove the pan from the heat. Discard the bay leaf. Stir in the unsalted butter and, if desired, the grated Parmesan cheese, to enhance creaminess. Taste the risotto and adjust seasoning with salt and pepper as needed.
10 - Garnish the finished risotto with fresh chopped parsley and serve immediately with lemon wedges on the side.