Slice the chicken breast into thin, bite-sized strips and place them in a small bowl.
Toss the chicken with olive oil, cumin, coriander, paprika, turmeric, garlic powder, salt, and pepper until evenly coated.
Heat a non-stick skillet over medium-high heat and cook the chicken for 6 to 8 minutes until golden brown and fully cooked.
While the chicken cooks, whisk the tahini and lemon juice together in a small ramekin, adding a teaspoon of warm water if needed to reach a drizzling consistency.
Place the warm cooked basmati rice in the base of a serving bowl.
Top the rice with the spiced chicken, diced cucumber, diced tomato, and minced red onion.
Drizzle the lemon-tahini sauce over the entire bowl and garnish with freshly chopped parsley before serving.