Heat the extra virgin olive oil in a paella pan or wide heavy-bottomed skillet over medium heat.
Add the sliced Spanish chorizo and cook until the fat renders and the edges become slightly crisp.
Add the diced yellow onion and red bell pepper to the pan, sautéing until the vegetables are softened and fragrant.
Stir in the minced garlic, smoked paprika, and Bomba rice, ensuring every grain is coated in the flavorful oils for about one minute.
Pour in the seafood stock, tomato puree, and saffron threads, then season with sea salt and black pepper.
Bring the liquid to a gentle simmer, then reduce the heat to low and cook undisturbed for 10 minutes to allow the rice to absorb the broth.
Nestle the shrimp and scrubbed mussels into the rice, cover the pan, and cook for an additional 5 to 8 minutes until the seafood is fully cooked.
Increase the heat to medium-high for the final 60 seconds to develop the toasted socarrat on the bottom, then garnish with fresh parsley and a lemon wedge before serving.