For the Chicken Marinade:
In a medium bowl, combine Korean BBQ sauce, soy sauce, brown sugar, gochujang, minced garlic, grated ginger, and sesame oil. Mix well until sugar is dissolved.
Add chicken pieces to the marinade, ensuring all pieces are well coated. Cover and refrigerate for at least 2 hours, preferably overnight.
When ready to cook, heat a skillet over medium-high heat. Add the marinated chicken and cook for 6-8 minutes until fully cooked and slightly caramelized. Set aside.
For the Pizza:
Preheat your oven to 425°F (220°C). If using a pizza stone, place it in the oven while preheating.
On a floured surface, roll out the pizza dough to about 1/4 inch thickness in your desired shape (circle or rectangle).
Transfer the dough to a pizza pan or parchment paper if using a pizza stone.
Spread a thin layer of Korean BBQ sauce over the dough, leaving a small border around the edges for the crust.
Sprinkle half of the mozzarella cheese over the sauce.
Distribute the cooked Korean BBQ chicken evenly over the cheese.
Add sliced red onions and half of the scallions.
Top with the remaining mozzarella cheese.
Bake for 12-15 minutes, or until the crust is golden brown and the cheese is bubbly and slightly browned.
Remove from the oven and immediately garnish with remaining scallions, fresh cilantro, and sesame seeds.
Let the pizza rest for 2 minutes before slicing.
Serve with optional lime wedges, sriracha sauce, and chopped kimchi on the side.