Heat olive oil in a paella pan or wide skillet over medium-high heat.
Season diced chicken with sea salt and black pepper, then sear until golden; remove and set aside.
Add diced red bell peppers and minced garlic to the pan, sautéing until fragrant and softened.
Stir in the dry bomba rice and smoked paprika, toasting the grains for one minute until translucent at the edges.
Pour in the chicken broth and add saffron threads, stirring once to distribute the ingredients evenly.
Bring the liquid to a boil, then reduce heat to low and simmer undisturbed for 10 minutes.
Arrange the shrimp, mussels, seared chicken, and frozen peas on top of the rice bed.
Cover the pan and cook for 8 minutes until the seafood is fully cooked and the liquid is absorbed.
Increase the heat to medium for 2 minutes without stirring to develop the signature crispy socarrat bottom.
Garnish with chopped fresh parsley and serve immediately with a fresh lemon wedge.