Step 1: Prepare the Oven and Baking Sheet: Preheat the oven to 400F (200C). Line a large baking sheet with parchment paper for easy cleanup.
Step 2: Combine Vegetables and Aromatics: In a large bowl, combine the quartered red potatoes, chopped red and yellow bell peppers, sliced red onion, halved Kalamata olives, and minced garlic.
Step 3: Dress the Vegetables: Drizzle the vegetables with olive oil and lemon juice. Sprinkle with dried oregano, dried basil, salt, and black pepper. Toss well to ensure the vegetables are evenly coated.
Step 4: Arrange Vegetables on Baking Sheet: Spread the seasoned vegetables in a single layer on the prepared baking sheet.
Step 5: Prepare the Chicken: Pat the chicken breasts dry with paper towels. Place the chicken breasts on top of the vegetables, spacing them evenly across the baking sheet.
Step 6: Bake: Bake in the preheated oven for 25-30 minutes, or until the chicken is cooked through and the vegetables are tender. The internal temperature of the chicken should reach 165F (74C).
Step 7: Add Feta (Optional): If desired, sprinkle crumbled feta cheese over the chicken and vegetables during the last 5 minutes of baking.
Step 8: Garnish and Serve: Remove the baking sheet from the oven. Garnish with fresh chopped parsley. Serve immediately.
Optional Tip: For a dairy-free version, omit the feta cheese. For added flavor, consider marinating the chicken breasts in the olive oil, lemon juice, and herbs for at least 30 minutes before baking. Other vegetables like zucchini, cherry tomatoes, or asparagus can be added or substituted based on preference and availability.