Preheat your oven to 400°F (200°C) and line a large rimmed baking sheet with parchment paper.
Dice the chicken breast, bell peppers, and zucchini into uniform bite-sized pieces to ensure even cooking.
Rinse and drain the chickpeas, then pat them thoroughly dry with a clean kitchen towel to help them crisp up in the oven.
In a large mixing bowl, whisk together the olive oil, lemon juice, smoked paprika, garlic powder, sea salt, and black pepper.
Add the chicken, chickpeas, and chopped vegetables to the bowl and toss until every piece is well-coated with the marinade.
Spread the mixture in a single, even layer onto the prepared baking sheet, ensuring nothing is overcrowded.
Roast for 20-25 minutes, tossing the ingredients halfway through, until the chicken is cooked through and the vegetables are tender-crisp.
Remove from the oven and transfer to a serving bowl, enjoying the meal while it is warm and fragrant.