All ingredients ready? Let's begin!
Season the shrimp with the Cajun seasoning and set aside.
In a large, deep sauté pan or stock pot, heat 2 tablespoons of oil over medium heat. Add the chicken and sausage and cook for 6-8 minutes, flipping the pieces of meat halfway, until the chicken is cooked and the sausage is browned and crisp on the surface. Transfer to a clean plate, leaving the oil and grease from the sausage in the pan.
In the same oil, sauté bell peppers, celery, and onion for about 5 minutes until the onion is tender. Add garlic and stir it in, then add tomato paste and cook for another 2 minutes, while stirring constantly. Add more olive oil if needed.
Add crushed tomatoes, stir, and mix in the oregano, thyme, basil, smoked paprika, creole seasoning, cayenne, and bay leaves. Stir for a minute until fragrant.
Introduce the pre-marinated shrimp, and the previously cooked chicken and sausage, and stir them together.
Pour 3 cups of chicken broth in, stir, cover the pot, and let it simmer on medium-low heat for about 10 minutes.
Rinse the rice thoroughly and add it to the pot, stir, and simmer covered for 10 minutes.
Uncover, stir to remove any stuck rice, then cook for another 10 minutes covered. Or uncover after 5 minutes if you like your jambalaya rice to be drier. Add more chicken broth if the rice is still uncooked.
Taste and add salt, pepper, and additional Cajun or Creole seasoning if needed. Remove the bay leaves.
Serve immediately with freshly chopped parsley and lemon wedges. Dig in!