Preheat your oven to 400°F (200°C) and line a large rimmed baking sheet with parchment paper.
Pat the chicken breast dry with paper towels and cut into 1-inch bite-sized pieces.
Rinse the garbanzo beans in a colander and dry them thoroughly with a clean kitchen towel to ensure they crisp up in the oven.
In a large mixing bowl, combine the chicken pieces, garbanzo beans, chopped bell peppers, and sliced zucchini.
Drizzle the olive oil over the mixture and sprinkle with sea salt, black pepper, garlic powder, and smoked paprika.
Toss everything together until the ingredients are evenly coated in oil and spices, then spread them in a single layer on the baking sheet.
Roast for 20 to 25 minutes, tossing the ingredients halfway through, until the chicken is cooked through and the chickpeas are slightly golden.
Remove from the oven and garnish with fresh chopped parsley before serving warm.