Preheat your oven to 425°F (220°C). If your oven tends to run hot, reduce the temperature to 400°F (205°C).
In a large mixing bowl, whisk together the olive oil, salt, pepper, garlic powder, onion powder, oregano, and lemon zest.
Line a large baking sheet with parchment paper.
Add the potatoes, onion, and bell pepper to the baking sheet. Toss with a small amount of the dressing until lightly coated.
Spread the vegetables into an even layer and roast for 20 minutes.
Add the broccoli, chicken pieces, and minced garlic to the remaining dressing. Toss until everything is evenly coated.
Carefully remove the baking sheet and add the chicken and broccoli alongside the roasted vegetables in a single layer.
Return the pan to the oven and continue roasting for another 20 minutes, or until the chicken reaches an internal temperature of 165°F (74°C) and the vegetables are beautifully caramelized.
Finish your Sheet Pan Chicken with Veggies with fresh lemon juice before serving.
Serve as is, or enjoy over rice, quinoa, couscous, or pasta.