How to make chicken pizza?

Ingredients

1 teaspoon extra-virgin olive oil, plus more for brushing
1/2 pound prepared pizza dough, at room temperature
1/3 cup plus 2 tablespoons dark barbecue sauce
1 8-ounce skinless, boneless chicken breast
Kosher salt and freshly ground pepper
2/3 cup grated smoked gouda cheese (about 3 ounces)
2/3 cup grated part-skim mozzarella cheese (about 3 ounces)
1/2 small red onion, thinly sliced
Fresh cilantro, for topping