Chicken and Quinoa Paella

Name: Chicken and Quinoa Paella
Ingredients: 6 cups chicken stock; 2 bay leaves; 3 teaspoons kosher salt, or more to taste, divided; 2 teaspoons ground black pepper, divided; 1.5 pounds skinless, boneless chicken breast halves, cut into 1 1/2-inch cubes; 1.5 pounds tomatoes, halved; 4 tablespoons olive oil, divided; 2 teaspoons smoked paprika; 0.5 cup onion strips, 1/4-inch thick; 3 cloves garlic, minced; 0.5 pound green beans, stem ends trimmed, halved; 1 red bell pepper, cut into 1/4-inch strips; 3 cups white quinoa; 25 saffron threads; 2 sprigs fresh rosemary, stemmed