Add half of the oil to stockpot or dutch oven, cook over medium heat.
Season the chicken with salt, black pepper, and half of the cajun seasoning, once the oil is hot add the chopped chicken to the pot and cook until the chicken is golden brown and reaches an internal temperature of 165F, this should take 6-8 minutes.
Before you cook your rice, start by rinsing your rice and cook in 1 1/3 cup water until fluffy and tender, bring the rice and water to a boil then reduce to low and simmer with a cover for 15-20 minutes or until all the water is absorbed, remove from heat and allow to sit covered for at least 5 minutes.
Add the chopped veggies to the dutch oven with the chicken, add more oil as needed.
Cook the onions until they are translucent and veggies are soft and slightly charred, this should take 6-8 minutes.
Stir in tomato paste and cook until dark brown, about 2 minutes.
Then add the cooked rice and the chicken broth in with the veggies and chicken.
Bring to a boil, then turn off heat and serve.
Notes
Rinse Rice: To achieve rice with a fluffy consistency, it important that you rinse the rice in order to remove the excess starch, if not rinsed the extra starch will make the rice mushier an stick together. Here are two methods you can use to rinse rice.
Homemade Cajun Seasoning: Use this recipe from Gimme Some Oven to make your own Cajun blend.
Top: Top with a little fresh cilantro, thyme or oregano and finish with a wedge of fresh lime to squeeze on top.