Slice the chicken breast into thin bite-sized strips and place them in a bowl.
Toss the chicken with the cumin, coriander, smoked paprika, sea salt, black pepper, and half of the garlic powder until evenly coated.
Heat the olive oil in a non-stick skillet over medium-high heat and add the seasoned chicken.
Sear the chicken for 5 to 7 minutes, turning occasionally, until it is golden brown and cooked through.
While the chicken cooks, whisk together the Greek yogurt, lemon juice, and the remaining garlic powder in a small bowl to make the sauce.
Dice the cucumber, tomato, and red onion, then toss them together in a small bowl.
Place the warm cooked basmati rice in the bottom of a serving bowl.
Top the rice with the seared chicken and the fresh vegetable salad, then drizzle the garlic yogurt sauce over the top before serving.