Sheet Pan Greek Garlic Butter Chicken and Potatoes

Name: Sheet Pan Greek Garlic Butter Chicken and Potatoes
Prep time: 25 min
Cook time: 45 min
Total time: 1 h 10 min
Cuisine: European, Mediterranean, Greek
Ingredients: 1 baby potatoes, halved; 4 tablespoons plus 1/3 cup extra virgin olive oil; kosher salt and black pepper; 2 lemons, 1 halved, and 1 sliced; 6 chicken thighs or breasts ((use similar sizes for even cooking)); 2 tablespoons dried oregano; 1 tablespoon smoked or regular paprika; 1 shallot, chopped; red pepper flakes; 6-8 garlic cloves, lightly smashed; 2 cups mixed fresh parsley, oregano, and dill, chopped; 1 medium yellow onion, sliced; 6-8 ounces feta cheese, cubed; 4 tablespoons salted butter, sliced into 6 pieces; 2 tablespoons red wine vinegar; 1-2 pepperoncini, chopped; 3/4 cup Greek olive mix, or green olives, torn