Since the BBQ sauce packs a lot of flavor, you only need a little salt and pepper. Sprinkle both sides of each thigh with salt and pepper.
Allow the seasoned chicken to sit at room temperature for about 15-20 minutes while you prepare the grill. This helps it cook more evenly.
Gas grill: Preheat to medium-high heat (about 375-400°F). Turn one side to medium-high and leave the other side on low to create a two-zone cooking setup.Charcoal grill: Arrange the coals on one side of the grill to create a hot zone and a cooler zone for indirect cooking.
Place the chicken thighs on the hot side of the grill. Cook for 4-5 minutes per side until they have nice grill marks.
After searing, transfer the thighs to the cooler side of the grill. This allows them to cook through without burning.
Chicken thighs are fully cooked when they reach 165°F. Use a meat thermometer to check.
Brush the BBQ sauce onto the chicken during the last 5-7 minutes of cooking. Flip and brush again every couple of minutes to build up a sticky, caramelized glaze. Sugar in BBQ sauce can burn quickly, so keep an eye out and move the chicken if needed.
Once off the grill, let the chicken rest for 5 minutes to allow the juices to redistribute.