In a small bowl, whisk together the cumin, coriander, turmeric, garlic powder, sea salt, and black pepper.
Coat the chicken breast evenly with the spice blend on all sides.
Heat the olive oil in a skillet over medium-high heat and sear the chicken for 6-7 minutes per side until golden and cooked through.
While the chicken is cooking, chop the cucumber, halve the cherry tomatoes, and mince the red onion.
In a small bowl, toss the vegetables with half of the lemon juice.
Slice the cooked chicken into thin strips against the grain.
Assemble the bowl by placing the warm brown rice at the base, then top with the sliced chicken and the fresh salad.
Finish with a dollop of Greek yogurt, the remaining lemon juice, and a sprinkle of fresh parsley.