Quick And Easy Paella

Name: Quick And Easy Paella
Ingredients: Saffron Broth:; 1 pound jumbo shrimp, peeled and deveined, shells reserved; 2 teaspoons olive oil; 1/2 teaspoon saffron threads, or more to taste; 2 1/4 cups chicken broth; Paella:; 1 tablespoon olive oil; 8 ounces chorizo sausage, sliced into thin rounds; 1/2 yellow onion, diced; 2 cloves garlic, minced; 1 1/3 cups Arborio rice; 1/2 cup green peas; 1 red bell pepper, cut into thin strips; 1 teaspoon paprika; 1 pinch cayenne pepper, or more to taste; salt to taste