Slice the chicken breast into thin, even strips and place them in a bowl.
Toss the chicken with the ground cumin, smoked paprika, turmeric, garlic powder, sea salt, and black pepper until thoroughly coated.
Heat the olive oil in a non-stick skillet over medium-high heat.
Add the chicken strips to the skillet and sear for 5-7 minutes, turning occasionally, until golden brown and fully cooked.
While the chicken cooks, whisk together the tahini and lemon juice in a small ramekin, adding a teaspoon of warm water at a time until it reaches a pourable consistency.
Prepare the base of the bowl by adding the cooked basmati rice.
Top the rice with the seared chicken strips, chopped cucumber, and diced tomato.
Finish the dish by drizzling the creamy tahini sauce over the top and serve immediately.