In a small bowl, whisk together the cumin, coriander, turmeric, sea salt, and black pepper to create the shawarma spice blend.
Slice the chicken breast into thin bite-sized strips and toss with the spice blend until every piece is thoroughly coated.
Heat the olive oil in a skillet over medium-high heat and sauté the chicken for 6-8 minutes until golden brown and fully cooked.
While the chicken cooks, prepare the salad by combining the diced cucumber, halved cherry tomatoes, and minced red onion in a small bowl.
In a separate small dish, stir together the Greek yogurt, minced garlic, and lemon juice until smooth to create the sauce.
Assemble the bowl by placing the warm, cooked basmati rice at the bottom and topping it with the spiced chicken and the fresh salad.
Drizzle the creamy garlic yogurt sauce over the entire bowl and serve immediately.