Slice the chicken breast into thin, even strips and place them in a bowl.
Toss the chicken with the ground cumin, coriander, garlic powder, turmeric, sea salt, and black pepper until well coated.
Heat the olive oil in a large skillet over medium-high heat.
Add the chicken to the skillet and sear for 5-7 minutes, turning occasionally, until golden brown and cooked through.
While the chicken cooks, dice the cucumber and tomato, and finely mince the red onion.
In a small ramekin, whisk together the Greek yogurt, tahini, and lemon juice until the sauce is smooth and creamy.
Place the warm cooked basmati rice in the bottom of a serving bowl.
Top the rice with the seared chicken and the fresh vegetable mixture.
Drizzle the lemon-tahini sauce over the entire bowl and garnish with fresh parsley before serving.