Bake the seasoned chicken for 20 minutes, or until a thermometer reads 165℉ in the thickest part of the chicken breast.
Remove from the oven, cover and allow the chicken to cool.
Melt the butter in a large cast iron skillet over medium heat.
Add the onions, jalapeño, bell peppers, and garlic. Sauté for about 5 minutes or until softened slightly.
Stir in the riced cauliflower, rice, and taco seasoning. Briefly frying to lightly toast the rice.
Add the chicken broth, diced tomatoes, and chicken. Stir and simmer for 20 minutes, stirring occasionally to prevent the rice from sticking to the pan.
Once the rice is fully cooked and the liquid is absorbed, sprinkle on the cheese and serve immediately.