Slice the chicken breast into thin, bite-sized strips for even cooking.
In a small bowl, combine the cumin, coriander, turmeric, garlic powder, sea salt, and black pepper.
Toss the chicken strips with the spice mixture until every piece is thoroughly and evenly coated.
Heat the olive oil in a non-stick skillet over medium-high heat and sauté the chicken for 6 to 8 minutes until golden brown.
While the chicken is cooking, dice the cucumber and onion and halve the cherry tomatoes, then toss them with half of the lemon juice.
In a small ramekin, whisk together the tahini, remaining lemon juice, and a teaspoon of warm water until the sauce is smooth and pourable.
Place the warm cooked rice in the center of a bowl and top with the spiced chicken and the fresh vegetable salad.
Finish the dish by drizzling the creamy tahini sauce over the top and serve immediately.