Slice the chicken breast into thin, even strips for quick and even cooking.
In a medium bowl, combine the chicken strips with the ground cumin, coriander, turmeric, garlic powder, sea salt, black pepper, and half of the olive oil.
Heat the remaining olive oil in a large skillet over medium-high heat until it begins to shimmer.
Add the seasoned chicken to the skillet and sauté for 6 to 8 minutes, stirring occasionally, until the chicken is golden brown and fully cooked through.
While the chicken is cooking, whisk together the plain Greek yogurt and lemon juice in a small bowl until the sauce is smooth and pourable.
Place the warm cooked basmati rice in the bottom of a serving bowl as the base.
Arrange the sautéed chicken, diced cucumber, and cherry tomatoes over the rice in neat sections.
Finish the bowl by drizzling the creamy lemon-yogurt sauce over the top and serve immediately while the chicken is still warm.