Preheat your oven to 400°F (200°C).
Pat the chicken breasts dry with paper towels.
2 chicken
Arrange sweet potato, broccoli florets, red bell pepper, onion, and chicken breasts on a large sheet pan lined with parchment paper or aluminum foil.
1 medium sweet potato, 1 head broccoli, 1 red bell pepper, ½ medium onion
Drizzle the chicken and veggies with olive oil and sprinkle evenly with garlic powder, thyme, oregano, salt, and pepper. Toss everything together to coat the vegetables evenly.
2 tbsp olive oil, 1 tsp garlic powder, 1 tsp thyme, 1 tsp oregano, ¼ tsp salt, ¼ tsp pepper
Squeeze lemon juice on top of the chicken breasts and vegetables. Arrange lemon slices over the chicken.
1/2 lemon
Place the sheet pan in the preheated oven and bake for 25-30 minutes, or until the chicken is cooked through and the vegetables are tender. Ensure the chicken reaches an internal temperature of 165°F (74°C).
Serve the lemon chicken alongside the roasted vegetables.