Preheat oven to 425°F and line a baking sheet with foil.*
Pat thighs dry and examine the underside for any cartilage or bone fragments. Sprinkle both sides with seasoning salt.
Heat oil in a large skillet over medium-high heat. Once the oil is hot, swirl it around the pan so the entire surface is covered. Place chicken thighs in the pan, skin-side down. If chicken is sizzling and popping to aggressively, turn heat down slightly or cover with a splatter screen.
Cook thighs until skin is deeply golden, and skin has released from the pan, 4 to 6 minutes. Remove pan from heat.
Transfer thighs, skin-side up, to a baking sheet and brush each thigh very generously with 1 to 2 tablespoons of BBQ sauce so there is a thick coating over all parts of the thigh showing.
Bake for 15 to 22 minutes, until an instant-read thermometer inserted into the center of the thigh reads 165°F
Serve and enjoy!
Notes
*I recommend lining your baking sheet with foil because sometimes the sugar from the BBQ sauce in the drippings will burn slightly making cleanup a little more challenging.*Serve 2 small thighs, 1 very large thigh per person. If all your thighs don't fit in your skillet, brown them in batches and then bake all together. *Use a thick-style BBQ sauce as thinner sauces won't be able to form a nice caramelized layer over the chicken.