In a small bowl, whisk together the ground cumin, coriander, turmeric, garlic powder, sea salt, and black pepper.
Pat the chicken breast dry and slice into thin strips, then toss with 1 teaspoon of olive oil and the prepared spice mixture until well coated.
Heat the remaining 1 teaspoon of olive oil in a large skillet over medium-high heat and sear the chicken until golden brown and cooked through.
In a small jar, stir the tahini and lemon juice until thick, then add the water one teaspoon at a time until it reaches a smooth, creamy consistency.
Divide the mixed greens and cooked quinoa between bowls, then top with the diced cucumber, halved cherry tomatoes, and the warm chicken.
Finish the bowls with a generous drizzle of the lemon-tahini sauce and a sprinkle of fresh parsley before serving.