Melt tallow in a cast iron skillet on medium heat and coat the chicken chunks in arrowroot powder until well covered.
Once tallow is heated up, place the coated chicken pieces in and cook until browned on all sides. While the chicken is frying, combine all of the sauce ingredients together in a mason jar and set aside until all of the chicken is finished. The sauce can even be prepared ahead of time and stored in the refrigerator.
Drain the leftover tallow from the skillet and pour the sauce directly into the skillet without cleaning. The residual tallow will become part of the sauce.
Stir the sauce on medium-low heat until the sauce thickens. Once thick, pour the sauce over the fried chicken chunks. Mix until evenly coated and serve over a bed of rice!