Preheat your oven to 400°F and line a large baking sheet with parchment paper for easy cleanup.
Pat the chicken breast dry with a paper towel and cut into 1-inch bite-sized cubes.
Rinse and drain the chickpeas, then pat them thoroughly dry to ensure they achieve a crispy texture in the oven.
In a large mixing bowl, combine the chicken cubes, chickpeas, broccoli florets, and sliced red bell pepper.
Drizzle the olive oil over the mixture and sprinkle with smoked paprika, garlic powder, sea salt, and black pepper.
Toss everything together until the ingredients are evenly coated in the oil and spices.
Spread the mixture in a single layer on the prepared baking sheet, making sure not to overcrowd the pan.
Roast for 20-25 minutes, tossing the ingredients halfway through, until the chicken is cooked through and the chickpeas are golden.
Remove from the oven and immediately drizzle with fresh lemon juice and garnish with chopped fresh parsley before serving.