Spicy Korean Pizza with Drizzled Scallion Oil

Name: Spicy Korean Pizza with Drizzled Scallion Oil
Ingredients: For the no-knead dough; 2/3 cup lukewarm water; 1 1/4 teaspoons active dry yeast; 1 3/4 cups flour; 1/2 teaspoon sugar; 1/2 teaspoon salt; For the toppings; 3 tablespoons gochujang (korean red pepper paste); 4 tablespoons hoisin sauce; 2 tablespoons mirin; 2 tablespoons sesame oil; 2 cups cooked chicken breast, chopped into bite-sized chunks; 1 1/2 cups mozzarella cheese; 1/4 red onion, sliced; 1/2 cup chopped scallions (green onions); 1/4 cup vegetable oil; 2 tablespoons sesame seeds, for garnish