Preheat your oven to 425°F (220°C).
In a mixing bowl, combine olive oil, lemon juice, garlic powder, oregano, basil, salt, and pepper. Whisk together until well blended.
Place chicken thighs into the marinade, ensuring they are fully coated. Marinate in the refrigerator for at least 30 minutes or ideally overnight.
Arrange the chicken thighs skin-side up in a baking dish. Bake for about 35-40 minutes or until they reach an internal temperature of 165°F (75°C).
Let the chicken rest briefly before serving warm. Drizzle any leftover marinade over the top.