Preheat grill to high + oil grates; rub chicken with 1 tbsp oil + salt/pep; grill 5-7 min with lid closed, flip + grill 5-7 min more until fully cooked; brush with ½ the pouch of BBQ sauce for the last 3-4 min

Meanwhile, wrap 4 tortillas tightly in foil; grill in foil 10-12 min until warm, flipping halfway

Tear corner of rice to vent + heat in microwave 90 sec (careful—it'll be hot!); finely chop half of onion (or whole!)

Chop chicken into bite-size pieces; add fillings to tortillas + dig in!