BBQ Chicken Skillet Pizza

Meanwhile, brush an ovenproof skillet with oil.  On a floured work surface, roll out dough until circumference matches your skillet. Transfer to skillet.  Leaving a 1⁄2" border for crust, spread barbecue sauce onto dough. Top with cheddar, fontina, chicken, and red onion.  Brush crust with olive oil and sprinkle with salt. Bake until crust is crispy and cheese is melty, 23 to 25 minutes.  Drizzle with barbecue sauce and ranch and garnish with chives.