Combine first 6 ingredients in a gallon-size zip top bag. Close bag and squish it around with your fingers to combine ingredients.
The Better than Bouillon measures out so easily. The flavor is just like roasted chicken!
Add in chicken breasts. Squish it some more to make sure the marinade coats all the chicken pieces.
Place bag into the refrigerator for at least 2 hours. When ready, preheat grill to medium-high heat. Grill chicken on each side until internal temperature of the chicken reaches 165f degrees.
While chicken is cooking, prepare 3-Ingredient Mexican Rice. Warm up queso dip (this can be done on the stovetop or in the microwave). When chicken is ready, serve on top of rice.
Drizzle warm queso on top of chicken and garnish with diced tomatoes and cilantro.