In a small bowl, whisk together the olive oil, cumin, smoked paprika, turmeric, sea salt, and black pepper to create a marinade.
Slice the chicken breast into thin, bite-sized strips and toss with the spice marinade until every piece is evenly coated.
Heat a large non-stick skillet over medium-high heat and sear the chicken for 5-7 minutes, turning occasionally until golden brown and cooked through.
While the chicken is cooking, whisk the Greek yogurt and lemon juice together in a small ramekin until smooth to make the dressing.
Place the warm, cooked brown rice into the base of a large lunch bowl.
Arrange the spiced chicken, diced cucumber, halved cherry tomatoes, and thinly sliced red onion over the rice.
Drizzle the zesty lemon-yogurt sauce over the entire bowl and garnish with freshly chopped parsley.