Slice the chicken breast into thin, bite-sized strips.
In a small bowl, combine the olive oil, minced garlic, cumin, smoked paprika, turmeric, sea salt, and black pepper.
Toss the chicken strips in the spice mixture until evenly coated.
Heat a non-stick skillet over medium-high heat and sear the chicken for 6-8 minutes until golden brown and cooked through.
While the chicken cooks, dice the cucumber, halve the cherry tomatoes, and thinly slice the red onion.
Prepare the sauce by whisking the Greek yogurt, tahini, and lemon juice together in a small ramekin until smooth.
Place the warm cooked brown rice in the center of a bowl.
Arrange the spiced chicken, cucumbers, tomatoes, and onions over the rice.
Drizzle the yogurt-tahini sauce over the entire bowl and enjoy immediately.