In a large bowl, combine the harissa paste, olive oil, honey, minced garlic, lemon juice, salt, and pepper, mixing well.
Add the chicken thighs to the bowl and coat them evenly with the marinade. Cover the bowl with plastic wrap and refrigerate for at least 1 hour (or up to overnight for maximum flavor).
Preheat your oven to 400°F (200°C).
Heat a large oven-safe skillet over medium-high heat. Once hot, add the marinated chicken thighs skin-side down, searing them for about 5–7 minutes until the skin is crispy and golden. Flip the thighs over.
Transfer the skillet to the preheated oven. Bake for 25-30 minutes, or until the internal temperature reaches 165°F (75°C) and the juices run clear.
Remove the skillet from the oven and let the chicken rest for 5 minutes. Garnish with fresh cilantro or parsley if desired, and serve with lemon wedges on the side.
Notes
For maximum flavor, marinate the chicken overnight.