Season chicken breasts on both sides with approximately 2 tsp. Cajun seasoning. Drizzle large skillet with 2 Tbsp. olive oil and cook each chicken breast on each side over medium-high heat for approximately 1 minute, enough to brown each side only. Transfer to a plate while you combine remaining ingredients in the skillet.
Yes, the chicken is still raw, and yes, it will be cooked through for dinner time.
Reduce heat to medium-low and add chicken broth, Zatarain's Family Size Red Beans & Rice Dinner Mix, onions, celery, green peppers, and remaining *2-3 tsp. Cajun seasoning. Stir to combine.
*This is where you can customize your meal. To control spiciness, add as little or all of the remaining seasoning.
Return browned chicken breasts to the skillet, evenly spacing each breast atop the rice mixture.
Cover skillet with lid and simmer over that medium-low heat for 20-25 minutes, or until liquid is absorbed and chicken is cooked through to 165 degrees.
Sprinkle with optional chopped parsley and serve.