Slice the chicken breast into thin, bite-sized strips and place them in a bowl.
Toss the chicken with the cumin, coriander, turmeric, garlic powder, smoked paprika, sea salt, and black pepper until evenly coated.
Heat the olive oil in a large skillet over medium-high heat. Add the chicken and cook for 6-8 minutes, stirring occasionally, until browned and cooked through.
While the chicken cooks, finely dice the cucumber, cherry tomatoes, and red onion, then combine them in a small bowl.
In a separate small jar or bowl, whisk together the tahini and lemon juice with one tablespoon of warm water until the sauce is smooth and creamy.
Place the warm cooked basmati rice into a serving bowl.
Top the rice with the spiced chicken and the fresh vegetable salad.
Drizzle the lemon-tahini dressing over the entire bowl and serve immediately.