Slice the chicken breast into bite-sized strips and place in a bowl.
In a small ramekin, whisk together 1 tsp olive oil, half the lemon juice, minced garlic, cumin, paprika, turmeric, salt, and pepper.
Pour the spice marinade over the chicken and toss to coat thoroughly; let sit for 10 minutes.
Heat the remaining 1 tsp olive oil in a non-stick skillet over medium-high heat.
Add the chicken to the skillet and cook for 6-8 minutes, turning occasionally until golden brown and cooked through.
While the chicken cooks, dice the cucumber, halve the cherry tomatoes, and finely mince the red onion.
In a small bowl, mix the Greek yogurt with the remaining lemon juice and chopped parsley to create the sauce.
Place the warm cooked brown rice in a bowl and top with the spiced chicken and the fresh vegetable salad.
Drizzle the lemon-parsley yogurt sauce over the top and serve immediately.