In a small bowl, combine the HeadCountry Sweet & Spicy seasoning blend with the kosher salt.
Mix to combine.
Unwrap the chicken and place it on a cutting board, breast side down.
Using kitchen shears, a sharp knife or cleaver, cut the chicken on either side of the backbone, about 1" apart.
Remove the backbone and discard.
Flip the chicken over and press hard to crack the breastbone, creating a flattened (spatchcocked) chicken.
Using a knife or scissors, cut the chicken in half down the middle, creating two mirror pieces.
Season the chicken halves all over (top and bottom) with the prepared seasoning blend.
Place the chicken halves on a wire rack over a cookie sheet and refrigerate, uncovered, for at least 1 hour.
Preheat your Traeger Grill to 325*.
Remove the chicken from the fridge and place the halves in the preheated grill.
Cook for about 30 minutes and check the internal temperature.
When it reaches 145*, open the grill and sauce the chickens.
Using the squirt bottles on the new HeadCountry Peach Habanero BBQ sauce, cover the chicken halves with sauce.
Use a brush or spoon to spread evenly, if desired.
Close the lid and allow the sauced chicken halves to keep cooking until they reach about 160*.
Move the chicken to a cutting board and tent with foil, allowing the carry-over cook to reach 165*.
Serve the sauced chicken halves with your favorite sides and enjoy the Mexican-inspired BBQ.