Heat the olive oil in a large pot over medium heat.
Add the onion, green bell pepper, and garlic. Cook until the vegetables are soft, about 5 minutes.
Stir in the diced tomatoes and chicken broth. Bring to a boil.
Add the rice and stir well. Reduce the heat to low and cover the pot.
Let the mixture simmer for about 15 minutes, stirring occasionally.
Stir in the cooked chicken, andouille sausage, shrimp, Creole seasoning, salt, and black pepper. Cover and cook until the rice is tender and the shrimp are pink, about 10 minutes.
Remove from heat and let the jambalaya sit for 5 minutes.
Garnish with green onions and parsley before serving.