Slice the chicken breast into thin, bite-sized strips and place them in a small bowl.
Toss the chicken with cumin, coriander, turmeric, garlic powder, sea salt, and black pepper until evenly coated.
Heat the olive oil in a non-stick skillet over medium-high heat.
Add the chicken to the skillet and sear for 5-7 minutes, turning occasionally, until the edges are crispy and the meat is cooked through.
In a separate pan, lightly sauté the cauliflower rice for 3 minutes, then stir in the cooked quinoa until heated through.
Prepare the dressing by whisking together the tahini and lemon juice in a small ramekin, adding a teaspoon of water at a time until it reaches a pourable consistency.
Divide the cauliflower rice and quinoa mixture into a bowl and top with the spiced chicken.
Add the diced cucumber, halved cherry tomatoes, and minced red onion to the bowl.
Drizzle the tahini dressing over the top and garnish with freshly chopped parsley before serving.