Begin by preheating your oven to 400°F (200°C) to ensure your chicken roasts perfectly.
In a large mixing bowl, combine the sliced garlic, vegetable oil, juice of one lemon, and chopped fresh herbs. Season with salt and pepper.
Add the chicken thighs to the bowl and marinate for at least 30 minutes or up to 2 hours.
Arrange the chicken thighs in a roasting pan, tucking halved garlic cloves around them and placing lemon slices on top.
Roast in the preheated oven for about 35-45 minutes, or until the chicken reaches 165°F (74°C).
Let the chicken rest for a few minutes before serving. Garnish with additional herbs if desired.