Heat the extra virgin olive oil in a small paella pan or wide skillet over medium heat.
Add the sliced chorizo and sauté for 2 minutes until the oils are released and the edges are slightly crisp.
Stir in the diced onion and red bell pepper, cooking for 3-4 minutes until the vegetables have softened.
Add the minced garlic and smoked paprika, stirring constantly for 30 seconds to release the aromatics without burning them.
Pour in the Bomba rice and stir to coat every grain in the flavorful chorizo oil.
In a separate small bowl, crush the saffron threads into the seafood stock and whisk in the tomato puree.
Pour the stock mixture over the rice and stir once to distribute; bring to a gentle simmer.
Reduce heat to low and cook undisturbed for 10 minutes to allow the rice to absorb the liquid and form a crust.
Nestle the shrimp and scrubbed mussels into the rice, cover with a tight lid, and cook for another 5-7 minutes until the shrimp are pink and mussels have opened.
Remove from heat, season with sea salt and black pepper, and let rest for 2 minutes.
Garnish with chopped fresh parsley and serve with a fresh lemon wedge.