In a small bowl, whisk together half of the lemon juice, minced garlic, cumin, coriander, turmeric, salt, and pepper.
Toss the chicken breast in the marinade until evenly coated.
Heat the olive oil in a non-stick skillet over medium-high heat.
Place the chicken in the skillet and cook for 6-7 minutes per side until the internal temperature reaches 165 degrees Fahrenheit.
Remove the chicken from the pan, let it rest for 3 minutes, then slice into thin strips.
In a small jar, whisk the tahini, remaining lemon juice, and water until the sauce is smooth and pourable.
Arrange the baby spinach and cooked quinoa in a bowl, then top with diced cucumber, halved cherry tomatoes, and minced red onion.
Place the sliced chicken on top and drizzle the creamy tahini sauce over the entire bowl.