Slice the chicken breast into thin, bite-sized strips and place them in a medium bowl.
Whisk the olive oil with cumin, coriander, turmeric, garlic powder, sea salt, and black pepper, then toss with the chicken to coat evenly.
Heat a large non-stick skillet over medium-high heat and sear the chicken for 6-8 minutes, stirring occasionally until golden brown and cooked through.
While the chicken is cooking, dice the cucumber, halve the cherry tomatoes, and finely mince the red onion; toss them together in a small bowl with half of the lemon juice.
In a separate small dish, whisk the tahini with the remaining lemon juice and a teaspoon of warm water until the sauce is smooth and creamy.
Place the warm cooked basmati rice in a serving bowl and top with the spiced chicken and the fresh vegetable salad.
Drizzle the tahini sauce over the entire bowl and garnish with freshly chopped parsley before serving.