Preheat the oven to 400° F. In a small bowl, combine garlic powder, smoked paprika, sea salt, and fresh ground pepper.
Rub the spice mixture over the chicken breasts. Heat the oil in a large oven-safe skillet over medium-high heat. Sear the chicken for 5 minutes per side, until golden brown.
Remove from the heat and carefully spread the BBQ sauce over the chicken. Top with the cheese slices and bacon.
Cook in the preheated oven for 5 to 8 minutes, until the cheese is melted and the chicken registers 160° F with an instant-read thermometer.