Preheat your oven to 400°F (200°C) and line a large baking sheet with parchment paper.
Dice the chicken breast, bell pepper, and zucchini into bite-sized, uniform pieces.
Rinse and drain the chickpeas, then pat them completely dry with a paper towel to ensure they get crispy.
Place the chicken, chickpeas, peppers, and zucchini on the baking sheet and drizzle with olive oil.
Sprinkle the sea salt, black pepper, garlic powder, and dried oregano over the ingredients and toss well to coat evenly.
Spread the mixture in a single layer and roast for 20-25 minutes, or until the chicken is cooked through and the chickpeas are slightly crunchy.
In a small bowl, whisk together the Greek yogurt and lemon juice until smooth to create the zesty drizzle.
Transfer the roasted mixture to a bowl, top with crumbled feta cheese, and finish with the lemon-yogurt drizzle.