Preheat your oven to 400°F (200°C). Line a baking sheet with parchment paper.
In a large bowl, combine the harissa paste, honey, olive oil, garlic powder, onion powder, salt, and pepper. Mix well.
Add the chicken thighs to the bowl and coat them thoroughly with the harissa mixture. Let marinate for at least 15 minutes.
Place the marinated chicken on the prepared baking sheet and bake for 25-30 minutes, or until the chicken is cooked through and reaches an internal temperature of 165°F (74°C).
While the chicken is baking, prepare the quinoa according to package instructions.
Once the chicken is done, let it rest for 5 minutes before slicing it into strips.
To assemble the bowls, divide the cooked quinoa among four bowls. Top each bowl with sliced chicken, cherry tomatoes, cucumber, baby spinach, feta cheese, and parsley.
Serve with lemon wedges on the side for an extra burst of flavor.