In a small bowl, whisk together the olive oil, cumin, coriander, turmeric, garlic powder, sea salt, and black pepper.
Rub the spice mixture evenly over the chicken breast to coat all sides.
Heat a non-stick skillet over medium-high heat and cook the chicken for 6 to 7 minutes per side until golden brown and cooked through.
While the chicken cooks, dice the cucumber, halve the cherry tomatoes, and thinly slice the red onion, then combine them in a small bowl.
In another small bowl, mix the nonfat Greek yogurt with the lemon juice until smooth.
Remove the chicken from the pan, let it rest for 2 minutes, and then slice it into thin strips.
Assemble the bowl by placing the warm cooked brown rice at the base, then topping with the sliced chicken and the fresh vegetable salad.
Drizzle the lemon-yogurt sauce over the top and garnish with chopped fresh parsley before serving.