Shrimp and Sausage Jambalaya

INGREDIENTS

• 1 tablespoon olive oil
• 1 pound sausage, kielbasa or andouille, sliced
• 1 pound smoked ham, cubed
• 1 tablespoon butter
• 1 medium onion, diced
• 1 cup diced celery
• 1 green bell pepper, cored and diced
• 1 red bell pepper, cored and diced
• 1 cup seeded and diced tomato
• 3 garlic cloves, minced
• 1 jalapeno pepper, seeded and minced OR ½ teaspoon cayenne
• 2 teaspoons diced fresh oregano
• 1 teaspoon diced fresh thyme
• 2 tablespoons tomato paste
• 6 cups chicken stock
• 3 cups long-grain rice, rinsed
• 3 bay leaves
• 2 teaspoons coarse salt
• 1 teaspoon freshly ground black pepper
• 6 to 8 dashes hot sauce, optional
• ½ cup chopped scallions, divided
• ¾ cup chopped fresh parsley, divided
• ¼ cup freshly squeezed lemon juice
• 1 pound medium shrimp, deveined (20 to 24 count)