Preheat the oven to 425°F (220°C) and line a baking sheet with parchment paper.
In a large bowl, combine the chicken thighs, bell peppers, and potatoes. Add olive oil, lemon zest, Herbes de Provence, minced garlic, salt, and black pepper. Toss to coat evenly.
Spread the mixture onto the prepared baking sheet in a single layer. Ensure that the chicken is on top of the vegetables.
Roast in the oven for 40-50 minutes or until the chicken is cooked through and the vegetables are tender and golden brown, flipping halfway through.
Drizzle with lemon juice before serving.
Notes
Add chili flakes for a spicy kick or substitute chicken breasts for a leaner option.