Preheat your oven to 400°F (200°C) and line a large baking sheet with parchment paper for easy cleanup.
Dice the chicken breast into 1-inch cubes and chop the zucchini, red bell pepper, and red onion into bite-sized pieces.
Rinse and drain the chickpeas, then pat them completely dry with a paper towel to ensure they get crispy in the oven.
Place the chicken, chickpeas, and vegetables onto the prepared baking sheet.
Drizzle with the extra virgin olive oil and sprinkle evenly with garlic powder, dried oregano, sea salt, black pepper, and red pepper flakes.
Toss everything together until well-coated, then spread out in a single layer to ensure even roasting.
Roast for 20-25 minutes, tossing halfway through, 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 to brighten the flavors.
Transfer the mixture to a bowl and serve warm.