In a large pot (I use a soup pot) put in the water, seasoning, and chicken breasts.
Bring the water to a boil, and continue to let it boil until the chicken is fully cooked.
Once the chicken is fully cooked, remove it from the water.
Add the box of rice to the water, and let it cook, covered, for about 10-15 minutes.
While the rice is cooking, cut up the chicken and cheese into bite size pieces.
Once the rice has absorbed the water, add the chicken back into the pot.
Add in the Velveeta and stir until the cheese is fully melted and it's thoroughly mixed.
Serve the Chicken Cheesy Rice immediately.