In a bowl, mix olive oil, lemon juice, garlic, paprika, onion powder, oregano, salt, and pepper.
Add chicken thighs to the marinade and coat well.
Cover and refrigerate for at least 30 minutes.
Preheat your grill to medium-high heat.
Remove chicken from marinade and let excess drip off.
Place chicken thighs skin-side down on the grill.
Grill for 7-10 minutes until the skin is crispy and browned.
Flip the chicken and grill for another 7-10 minutes.
Ensure the internal temperature reaches 165°F (75°C).
Remove from grill and let rest for 5 minutes before serving.