Preheat your oven to 425°F and line a large sheet pan with parchment paper or aluminum foil for easy cleanup. Pat chicken pieces dry with paper towels before placing them on the prepared pan, spacing them evenly apart.

In a small bowl, whisk together olive oil, garlic powder, paprika, dried thyme, salt, and black pepper until fully combined. Pour this seasoning mixture over the chicken, using your hands to coat each piece thoroughly with the aromatic blend.

Scatter baby potatoes, onion, and red bell pepper around the chicken pieces, creating a colorful arrangement on your sheet pan. Drizzle these vegetables with half the remaining olive oil and sprinkle with additional salt and pepper as desired.

Place the sheet in the oven and roast for 18-20 minutes until chicken begins releasing juices and potatoes start browning on their edges. This cozy back to school sheet pan dinner recipe comes together beautifully as the pan's heat works simultaneously on all components.

Remove the pan from the oven carefully and add broccoli florets, baby carrots, and green beans around the chicken and potatoes. Drizzle vegetables with remaining olive oil, lemon juice, and chicken broth, then stir everything together gently.

Return to the oven and roast for an additional 12-15 minutes until chicken reaches 165°F internally and all vegetables become tender. The broth keeps everything moist while the lemon juice adds brightness that brightens the entire dish.

Remove from the oven and let rest for 3-4 minutes before serving directly from the sheet pan to your eager family members. Fresh herbs like parsley make an optional finishing touch that adds visual appeal to your weeknight dinner table.