Preheat & Prep: Preheat the oven to 425°F (220°C). Toss the baby potatoes with 2 tablespoons olive oil, salt, and black pepper on a large baking sheet.
Marinate the Chicken: In a bowl, mix 2 tablespoons olive oil, balsamic vinegar, Dijon mustard, oregano, paprika, garlic, shallot, salt, pepper, and red pepper flakes. Coat the chicken in this flavorful blend.
Roast to Perfection: Nestle the marinated chicken onto the baking sheet with the potatoes. If desired, add a few lemon wedges for extra citrusy notes. Roast for 25-30 minutes or until the chicken is cooked through and the potatoes are golden.
Create the Herby Olive Mix: While the chicken is roasting, mix olive oil, lemon juice, fresh herbs, pepperoncini, green olives, and toasted sesame seeds in a small bowl.
Whip Up the Feta Tzatziki: Combine Tzatziki sauce with crumbled feta cheese for a creamy, tangy finish.
Assemble & Serve: Once the chicken and potatoes are out of the oven, spoon over the herby olive mix and let the flavors meld for a few minutes. Serve with the creamy feta Tzatziki and enjoy with warm naan or pita!