Slice the chicken breast into thin, bite-sized strips.
In a small bowl, whisk together the cumin, coriander, turmeric, garlic powder, onion powder, sea salt, and black pepper.
Toss the chicken strips in the spice blend until every piece is evenly coated.
Heat the olive oil in a large skillet over medium-high heat and sauté the chicken until golden brown and fully cooked through.
While the chicken is cooking, dice the cucumber, halve the cherry tomatoes, and finely chop the red onion and fresh parsley; toss them together in a bowl to create a fresh salad.
In a separate small bowl, stir together the Greek yogurt, minced garlic, dried dill, and lemon juice until the sauce is smooth and creamy.
Place the warm cooked brown rice in a serving bowl, top with the spiced chicken and the vegetable salad, then drizzle generously with the garlic yogurt sauce.