Heat the vegetable oil in a large skillet or Dutch oven over medium-high heat.
Season the chicken pieces with salt, black pepper, and 1 tablespoon of Cajun seasoning. Add the chicken to the skillet and cook until browned on all sides, about 5-7 minutes. Remove the chicken from the skillet and set aside.
In the same skillet, add the sliced sausage and cook until browned, about 5 minutes. Remove the sausage from the skillet and set aside.
In the same skillet, add the chopped onion and bell pepper. Cook until softened, about 5 minutes. Add the minced garlic and cook for an additional minute.
Stir in the diced tomatoes (with their juices), rice, chicken broth, thyme, oregano, paprika, cayenne pepper, and remaining Cajun seasoning. Bring the mixture to a boil.
Once boiling, reduce the heat to low, cover, and simmer for 20-25 minutes, or until the rice is cooked and most of the liquid is absorbed.
Return the cooked chicken and sausage to the skillet. Stir well to combine. Cook for an additional 5 minutes, or until the chicken is heated through.
Taste and adjust seasoning with salt, black pepper, and additional Cajun seasoning if desired.
Garnish with chopped green onions and fresh parsley before serving.