Step 1: Preheat your oven to 400°F (200°C).
Step 2: In a mixing bowl, combine the olive oil, juice of one lemon, minced garlic, kosher salt, and black pepper. Whisk until combined.
Step 3: Add the chicken breasts to the bowl and coat them with the marinade. Let marinate for at least 15 minutes.
Step 4: Toss the quartered red potatoes and green beans in the remaining marinade until coated.
Step 5: Arrange the marinated chicken in the center of a large baking sheet, surrounded by potatoes and green beans. Layer the thinly sliced lemon on top.
Step 6: Roast for about 30-35 minutes until chicken reaches 165°F (75°C) and veggies are tender.
Step 7: Remove from the oven, let rest for a few minutes, and serve warm.
