Heat the extra virgin olive oil in a paella pan or wide skillet over medium heat.
Add the diced Spanish chorizo and sauté until the fat renders and the edges are slightly crisp.
Stir in the yellow onion and red bell pepper, cooking until the vegetables are softened and fragrant.
Add the minced garlic, tomato puree, and Bomba rice, stirring to coat every grain in the flavorful oil.
Pour in the seafood stock and add the saffron threads, sea salt, and black pepper.
Bring the mixture to a gentle simmer and stop stirring to allow the rice to cook evenly and form a crust.
Arrange the shrimp and scrubbed mussels on top of the rice, then cover the pan with a tight-fitting lid.
Cook for 12 to 15 minutes until the liquid is absorbed, the shrimp are pink, and the mussels have opened.
Garnish with frozen peas and fresh parsley, then serve immediately with a fresh lemon wedge.