Step 1: In a large bowl, combine the chicken pieces with olive oil, lemon juice, white vinegar, oregano, cumin, paprika, garlic powder, red pepper flakes (if using), salt, and black pepper. Mix well to ensure all chicken is coated. Cover and refrigerate for at least 4 hours, or preferably overnight.
Step 2: Prepare the Yellow Rice: In a medium saucepan, melt butter with olive oil over medium heat. Add diced onion and cook until softened, about 5 minutes. Add minced garlic and cook for another minute until fragrant. Do not brown.
Step 3: Stir in the rinsed Basmati rice, turmeric powder, and ground cumin. Toast the rice for 2-3 minutes, stirring constantly, until lightly fragrant.
Step 4: Pour in the chicken broth and add salt to taste. Bring to a boil, then reduce heat to low, cover, and simmer for 15-18 minutes, or until all liquid is absorbed and rice is tender. Do not lift the lid during cooking. Once cooked, remove from heat and let stand, covered, for 10 minutes. Fluff with a fork.
Step 5: While the rice cooks, prepare the White Sauce: In a medium bowl, whisk together Greek yogurt, mayonnaise, white vinegar, lemon juice, sugar, dried oregano, garlic powder, black pepper, and a pinch of salt until smooth. Taste and adjust seasonings as needed. Cover and refrigerate until ready to serve.
Step 6: Cook the Chicken: Heat a large skillet or grill pan over medium-high heat. Add a tablespoon of oil if needed. Add the marinated chicken in a single layer, making sure not to overcrowd the pan (cook in batches if necessary). Cook for 6-8 minutes, turning occasionally, until the chicken is cooked through, slightly charred, and golden brown. The internal temperature should reach 165°F (74°C).
Step 7: To serve, plate a generous portion of yellow rice. Top with the cooked Halal Cart Style Chicken, a drizzle (or generous pour!) of the white sauce, and a dash of hot sauce or Sriracha if desired. Garnish with fresh chopped parsley or cilantro, and serve with shredded lettuce, diced tomatoes, and cucumbers on the side. Enjoy your homemade Halal Cart Style Chicken and Yellow Rice!