In a small bowl, whisk together the cumin, coriander, turmeric, garlic powder, sea salt, and black pepper.
Slice the chicken breast into thin strips and toss thoroughly with the spice blend until evenly coated.
Heat the olive oil in a large skillet over medium-high heat and sauté the chicken for 6-8 minutes until golden and crispy.
While chicken cooks, steam the cauliflower rice in a separate pan for 3 minutes, then stir in the cooked quinoa.
In a small jar, whisk the tahini, lemon juice, and water until the dressing is smooth and pourable.
Divide the cauliflower-quinoa mixture into bowls and top with the crispy chicken, cucumber, tomatoes, and red onion.
Drizzle the creamy tahini sauce over the bowls and serve immediately.