Smoked Sausage Jambalaya

2 tablespoons olive oil

1 1/2 pounds boneless skinless chicken thighs

Kosher salt and freshly ground black pepper

1 pound smoked sausage, sliced into circles

1 large Vidalia onion, chopped

1 green bell pepper, chopped

2 ribs celery, chopped

4 cloves garlic, chopped

1 tablespoon chopped thyme

2 cups long grain white rice

2 tablespoons tomato paste

1 (14-ounce) can fire-roasted diced tomatoes

2 1/2 cups chicken broth

1 dried bay leaf

1/4 cup thinly sliced green onions

3 tablespoons chopped fresh parsley