Homemade Zinger Burger (KFC Copycat Recipe)

Name: Homemade Zinger Burger (KFC Copycat Recipe)
Prep time: 5 h 25 min
Cook time: 20 min
Total time: 5 h 45 min
Cuisine: American, Middle Eastern
Ingredients: 1 teaspoon chilli powder; 1 teaspoon mustard powder; 1/2 teaspoon ground white pepper; 1/2 teaspoon ground black pepper; 1 teaspoon salt; 2 pieces boneless skinless chicken breasts; 1 cup natural plain yoghurt (245g, full-fat recommended); 1 cup water (240ml); 1 1/2 teaspoons baking powder; 1/2 teaspoon chilli powder; 1/2 teaspoon mustard powder; 1 dash ground black pepper; 1 dash ground white pepper; 1 cup plain flour (125g, all-purpose); 2 cups vegetable oil (for frying, enough to fill pan to approximately 1.5 inches / 4cm depth — roughly 475ml); 2 whole burger buns; 2 large iceberg lettuce leaves (shredded); 2 tablespoons mayonnaise (30g); 2 slices cheese