Heat oil in a large skillet over medium heat. Add onion, red pepper, garlic and sauté for 10 minutes, stirring frequently.
Add paprika, cayenne, tomato paste.
Remove from heat and reserve.
Season fillets with salt and black pepper. Place 2 tbsp. oil in a medium skillet. Bring to medium/high heat and place black cod in skillet. Sear fish 1 minute on each side. Place skillet in a 400°F oven and roast for 7 minutes.
In a medium saucepan, over moderate heat, place chicken stock, chorizo, Sofrito, and simmer for 5 minutes. Add clams and continue to cook until clams open. Add white beans. Remove from heat and stir in butter.
To Serve:
Divide Sofrito broth among 4 large serving bowls. Top with fillets and drizzle with extra virgin olive oil. Garnish with fresh herbs, i.e. chervil, lemon thyme, parsley.