Heat the extra virgin olive oil in a wide, shallow paella pan or skillet over medium heat.
Add the sliced chorizo and cook for 2 minutes until the edges are crispy and the smoky oils are released.
Stir in the diced yellow onion and red bell pepper, sautéing for 3-4 minutes until the vegetables have softened.
Add the minced garlic, smoked paprika, and saffron threads, stirring for 30 seconds until highly fragrant.
Add the bomba rice to the pan, stirring for 1 minute to ensure every grain is toasted and coated in the aromatic oil.
Pour in the tomato puree and seafood broth, stirring once to combine, then bring the mixture to a gentle simmer.
Reduce the heat to low and allow the rice to cook undisturbed for 10 minutes to develop the base.
Nestle the shrimp and scrubbed mussels into the rice, pressing them down slightly into the liquid.
Scatter the frozen peas over the top, cover the pan with a lid or foil, and cook for 5-7 minutes until the shrimp are pink and the mussels have fully opened.
Season with sea salt and black pepper, then serve immediately with a fresh lemon wedge for a bright finish.