Heat the olive oil in a wide, shallow pan or paella pan over medium-high heat.
Add the diced chicken breast and sliced Spanish chorizo, sautéing until the chicken is golden and the chorizo has released its savory oils.
Stir in the diced onion and red bell pepper, cooking until the vegetables are softened and slightly caramelized.
Add the minced garlic and grated tomato, stirring for one minute until the mixture is fragrant and slightly thickened.
Sprinkle in the Bomba rice and smoked paprika, stirring to coat the grains thoroughly in the flavorful oil.
Pour in the chicken broth and add the saffron threads, sea salt, and black pepper; stir once to distribute and then do not stir again.
Simmer on medium-low for about 12-15 minutes until the liquid is mostly absorbed and the rice is tender.
Arrange the shrimp and frozen peas on top of the rice, covering the pan for 3-5 minutes until the shrimp are pink and opaque.
Remove from heat and let the pan rest for 5 minutes to allow the flavors to meld and the bottom layer of rice to crisp.
Garnish with fresh parsley and serve with a lemon wedge for a bright, citrusy finish.