Brine: Remove the chicken from the packaging. Remove the neck and organs. Place it in a large zip-top bag. Combine the brine and water. Pour that into the bag. Seal the bag and refrigerate for 30 minutes.
Prep: Remove the chicken from the brine. Pat it dry with paper towels. Truss the legs together with butcher's twine.
Heat Smoker: Turn the smoker on. Choose the chicken preset and 300F degrees. Select probe and set it to 183F degrees. Insert the probe into the chicken breast. Add pellets, and choose your smoke intensity level.
Smoke: Place the chicken in the smoker above the drip pan on the bottom rack. Cook for 2-3 hours, until the internal temperature of the breast reaches 183F degrees.
Option: For a full meal, slide a pan of Costco mac and cheese into the smoker on a rack above the chicken after the first hour.
Rest: Once the chicken reaches temp, let it rest for 15 minutes. Then, slice and serve.
Notes
The nutritional values are estimates. It's hard to calculate the exact numbers because the brine ingredients get discarded.