Slice the chicken breast into thin, bite-sized strips.
In a small bowl, whisk together the cumin, coriander, turmeric, garlic powder, sea salt, and black pepper.
Toss the chicken strips in the spice blend until evenly coated.
Heat the olive oil in a non-stick skillet over medium-high heat and sauté the chicken for 6-8 minutes until golden and cooked through.
While the chicken cooks, dice the cucumber, halve the cherry tomatoes, and finely mince the red onion.
In a separate bowl, toss the vegetables with the lemon juice for a quick fresh salad.
Place the warm cooked brown rice in the bottom of a serving bowl.
Arrange the spiced chicken and the vegetable salad over the rice.
Finish the bowl with a dollop of plain Greek yogurt and serve immediately.