Slice the chicken breast into thin, bite-sized strips.
In a small bowl, combine the cumin, coriander, turmeric, smoked paprika, sea salt, and black pepper.
Toss the chicken strips with the spice blend and half of the olive oil until evenly coated.
Heat the remaining olive oil in a large skillet over medium-high heat.
Add the chicken to the skillet and sear for 6 to 8 minutes, turning occasionally, until golden brown and cooked through.
While the chicken cooks, whisk together the Greek yogurt, lemon juice, and minced garlic in a small ramekin to create the sauce.
Prepare the bowl by placing the cooked basmati rice at the bottom.
Top the rice with the spiced chicken, diced cucumber, halved cherry tomatoes, and sliced red onion.
Drizzle the garlic-yogurt sauce over the entire bowl and serve immediately.