In a mixing bowl, combine the olive oil, juice and zest of one lemon, balsamic vinegar, chopped oregano, smoked paprika, shallot, garlic, salt, pepper, and red pepper flakes. Add the chicken and toss to coat. Cover and let it marinate in the refrigerator for at least 30 minutes, or up to overnight for maximum flavor.
While the chicken is marinating, preheat your oven to 400°F (200°C). In another bowl, toss the potatoes, red bell peppers, yellow onion, sun-dried tomatoes, and kalamata olives with a drizzle of olive oil, salt, and pepper.
Spread the marinated chicken on one side of the sheet pan and the vegetable mixture on the other. Make sure everything is evenly distributed for even cooking.
Place the sheet pan in the preheated oven and roast for about 25-30 minutes, or until the chicken is cooked through (internal temperature of 165°F) and the potatoes are tender and golden.
Once out of the oven, sprinkle the roasted dish with cubed feta cheese and toasted pine nuts (if using). Drizzle with a little more olive oil and a squeeze of the remaining lemon half before serving.
Garnish with mixed fresh herbs and serve alongside a dollop of plain Greek yogurt for a creamy contrast. Enjoy your Easy Greek Sheet Pan Chicken Souvlaki and Potatoes. with your loved ones!