Seafood Paella

Name: Seafood Paella
Ingredients: 4 tablespoons olive oil; 1/2 pound chicken breast, boneless, skinless; 1/4 cup diced onions; 2 tablespoons chopped garlic; 1/4 cup diced red and green peppers; 1/4 cup diced celery; 1 cup parboiled rice; 2 cups chicken stock; 1/2 tablespoon saffron; 6 blue crabs, cleaned and halved; 1 pound shrimp, peeled and de-veined; 12 clams; 12 mussels; 1/2 pound smoked sausage, sliced into 1/4-inch pieces; 1/2 teaspoon salt; 1/2 teaspoon pepper