Fire up your Kettle grill with the Vortex loaded with charcoal. Don't start cooking until the coals are all lit and starting to ash over.
Rinse the chicken and pat dry.
Pour the seasoned flour mixture into a pie pan or shallow bowl.
Coat chicken completely in the mixture.
Transfer chicken to the grill along the edges, skin-side up.
Cover and cook for 40 minutes, turning the lid 90 degrees every 15 minutes.
Lightly brush the chicken with a little vegetable oil. Use caution as the grill will be hot.
Cover and cook another 5 minutes or until the chicken hits 160 F.
Remove and let rest and come to 165 F before serving.