Preheat your oven to 400°F and line a large rimmed baking sheet with parchment paper for easy cleanup.
Cut the chicken breast into 1-inch cubes and slice the zucchini into half-moons and the red bell pepper into bite-sized pieces.
Drain and rinse the chickpeas, then pat them thoroughly dry with a clean kitchen towel to ensure they get crispy in the oven.
Place the chicken, chickpeas, zucchini, and bell peppers on the prepared baking sheet.
Drizzle with olive oil and sprinkle with garlic powder, smoked paprika, sea salt, and black pepper.
Use your hands or tongs to toss everything together until evenly coated, then spread into a single layer.
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, drizzle with fresh lemon juice, and garnish with chopped fresh parsley before serving warm.