Heat the extra virgin olive oil in a paella pan or wide skillet over medium heat.
Add the diced Spanish chorizo and cook for 2-3 minutes until the fat renders and the edges are slightly crisp.
Stir in the diced yellow onion and red bell pepper, sautéing until the vegetables are softened and translucent.
Add the minced garlic, smoked paprika, and saffron threads, stirring for 30 seconds until fragrant.
Pour in the tomato puree and Bomba rice, stirring to coat every grain of rice in the aromatic oil.
Pour the chicken broth over the rice and season with sea salt and black pepper; do not stir the rice again to allow a crust to form on the bottom.
Simmer on low-medium heat for about 12 minutes until the liquid is mostly absorbed but the rice is still moist.
Arrange the shrimp and mussels on top of the rice, pressing them down slightly into the liquid.
Cover the pan and cook for another 5-8 minutes until the shrimp are pink and the mussels have opened.
Remove from heat, let rest for 5 minutes, then garnish with fresh parsley and a lemon wedge before serving.