Preheat your oven to 400°F and line a large baking sheet with parchment paper.
Cut the chicken breast, zucchini, and bell peppers into uniform bite-sized pieces.
Place the chicken, chickpeas, zucchini, and bell peppers onto the prepared baking sheet.
Drizzle with olive oil and sprinkle evenly with dried oregano, garlic powder, sea salt, and black pepper.
Toss the ingredients together until thoroughly coated and spread them out into a single layer.
Roast for 20-25 minutes until the chicken is cooked through and the vegetables have developed charred, caramelized edges.
Remove the pan from the oven and immediately drizzle the fresh lemon juice over the hot ingredients.
Transfer the mixture to a serving bowl and top with the crumbled feta cheese.