Preheat your oven to 400°F (200°C) and line a large baking sheet with parchment paper.
Cut the chicken breast, red bell pepper, and zucchini into uniform 1-inch bite-sized pieces.
In a large mixing bowl, combine the chicken, chickpeas, bell pepper, and zucchini.
Drizzle with the olive oil and sprinkle with sea salt, black pepper, dried oregano, and garlic powder.
Toss everything thoroughly until the ingredients are evenly coated in the oil and spices.
Spread the mixture in a single layer on the prepared baking sheet, ensuring nothing is overcrowded.
Roast for 18 to 22 minutes, or until the chicken is cooked through and the vegetables are tender and slightly charred.
Remove from the oven and immediately drizzle with fresh lemon juice before serving.