How to Make It
Heat oil in a Dutch oven over medium. Add chorizo; cook, stirring occasionally, until rendered, about 4 minutes. Add onion, bell pepper, oregano, and garlic; cook, stirring occasionally, until softened, about 6 minutes. Add potato, salt, paprika, and crushed red pepper; cook, stirring often, until fragrant, about 1 minute. Stir in chicken broth and beans. Bring to a boil over medium-high. Reduce heat to medium-low, cover, and simmer until potatoes are tender, about 15 minutes.
Increase heat to medium-high; add clams, cover, and cook until clams open, about 5 minutes. Discard any unopened clams. Stir in lemon juice, and sprinkle with scallions.