In a small bowl, whisk together the cumin, paprika, turmeric, garlic powder, sea salt, and black pepper.
Toss the sliced chicken breast with the spice blend until evenly coated.
Heat olive oil in a skillet over medium-high heat and sauté the chicken until golden brown and cooked through, about 6-8 minutes.
While chicken cooks, combine the Greek yogurt, lemon juice, and dried dill in a small ramekin to make the sauce.
Dice the cucumber, halve the cherry tomatoes, and finely mince the red onion.
Assemble the bowl by placing the cooked brown rice at the base, then topping with the spiced chicken and fresh vegetables.
Drizzle the zesty yogurt sauce over the top before serving.