First things first, grab your trusty slow cooker. Give the inside a light spray with cooking spray just to be safe. Place your chicken pieces right there in the bottom.
1.5 pounds boneless, skinless chicken breasts or thighs
Now, pile in everything else (except the cheese for now!). Add the rice, black beans, corn, the can of diced tomatoes with green chilies (liquid and all!), chicken broth, taco seasoning, garlic powder, onion powder, and salt.
1.5 pounds boneless, skinless chicken breasts or thighs
Give it all a gentle stir. You want to make sure the rice is somewhat distributed and submerged in the liquid, but try to keep the chicken pieces nestled underneath everything.
1.5 pounds boneless, skinless chicken breasts or thighs
Pop the lid on. Now, just let your slow cooker do its thing! Cook on the LOW setting for about 4 to 5 hours. You'll know it's ready when the chicken is cooked through (it should shred easily) and the rice is nice and tender. Resist the urge to lift the lid too often – that lets out all the heat!
1.5 pounds boneless, skinless chicken breasts or thighs
Once it's cooked, carefully remove the chicken pieces from the slow cooker. Place them on a cutting board or plate and use two forks to shred the chicken.
1.5 pounds boneless, skinless chicken breasts or thighs
Return the shredded chicken back into the slow cooker with the rice mixture.
1.5 pounds boneless, skinless chicken breasts or thighs
Give it another stir to make sure the chicken is mixed throughout.
1.5 pounds boneless, skinless chicken breasts or thighs
Now for the best part! Sprinkle that glorious shredded cheese evenly over the top of the mixture.
1.5 pounds boneless, skinless chicken breasts or thighs
Put the lid back on and let it cook for another 5 to 10 minutes, or until that cheese is perfectly melted and gooey.
1.5 pounds boneless, skinless chicken breasts or thighs
Serve warm! Spoon it into bowls and add your favorite taco toppings (see suggestions below!).