Rinse the jasmine rice under cold water until the water runs clear. This removes excess starch and prevents stickiness. Set aside.
In a large skillet, heat the olive oil over medium heat. Add the diced chicken thighs and season with salt and black pepper. Cook until browned and cooked through, about 5-7 minutes. Remove the chicken from the skillet and set aside.
In the same skillet, add the diced onion, green bell pepper, and celery. Sauté until softened, about 4-5 minutes.
Add the minced garlic to the sautéed vegetables and cook for another minute, until fragrant.
Stir in the tomato paste, Cajun seasoning, smoked paprika, and cayenne pepper. Cook for 2-3 minutes, stirring to combine the flavors.
Add the rinsed rice to the skillet and stir well to coat it with the spices and vegetable mixture.
Pour in the chicken broth and return the cooked chicken to the skillet. Bring the mixture to a boil, then reduce the heat to low.
Cover the skillet and allow the rice to simmer for about 20-25 minutes, or until the rice is tender and has absorbed the liquid.
Once cooked, fluff the rice with a fork and adjust seasoning if necessary.
Serve hot, garnished with freshly chopped parsley.
Notes
Adjust cayenne pepper to taste for desired spiciness.