In a bowl, combine the lemon juice, vinegar, olive oil, yogurt, oregano, paprika, cumin, red pepper flakes, and salt. Add the chicken chunks and toss until evenly coated. The yogurt acts as a natural tenderizer, so this marinade will make your chicken incredibly juicy. Let it sit at room temperature while you prepare the other components—even 10 minutes makes a difference, though you can marinate longer if you have the time.
Melt the butter in a pot over medium heat. Add the turmeric and remaining cumin, stirring constantly for about 1 minute to bloom the spices and release their aromatic oils. Add the rice and toast it in the spiced butter for 2 minutes, stirring frequently—this toasting step adds depth and prevents the rice from becoming mushy. Pour in the chicken stock and season with salt and pepper. Bring to a boil, then reduce heat to low, cover, and simmer for 15 minutes. Remove from heat and let sit covered for 10 minutes to finish cooking and fluff the rice.
While the rice cooks, prepare the fresh elements for your bowls. Dice the cucumber into 1/2-inch pieces and halve the cherry tomatoes lengthwise. In a separate bowl, combine the cucumber, tomatoes, sumac, and salt. The sumac adds a bright, lemony tang that's essential to Mediterranean flavor. You can toss this together just before serving to keep the vegetables crisp.
While the rice is in its final 10-minute resting period, preheat your oven to 450°F. Spread the marinated chicken from Step 1 in a single layer on a baking sheet or roasting pan. Roast for 15-20 minutes until the chicken is cooked through and the exterior has some light browning. The high heat will give you nicely caramelized edges while the yogurt marinade keeps the inside moist. The timing works perfectly—your chicken will finish right around when the rice is ready.
Toast your flatbreads in a skillet over medium-high heat for about 1-2 minutes per side until they're warm and have slight char marks. This brings out their flavor and gives them a pleasant texture. Warm your tzatziki if desired, and finely chop your fresh parsley. Everything is now ready to assemble.
Divide the spiced rice from Step 2 among bowls, creating a generous base. Top each bowl with roasted chicken from Step 4, then arrange the fresh vegetable salad from Step 3 alongside. Drizzle with tzatziki and garnish generously with fresh parsley. Serve with warm toasted flatbread on the side for scooping and wrapping. I like to let guests customize their bowls a bit—some prefer more tzatziki, others like extra sumac for that bright acidity.