Preheat your oven to 400°F (200°C) and line a large sheet pan with parchment paper for easy cleanup.
Drain and rinse the chickpeas, then pat them very dry with a clean kitchen towel to ensure maximum crispiness.
Dice the chicken breast into bite-sized 1-inch cubes and thinly slice the red bell pepper.
Place the chicken cubes, dried chickpeas, broccoli florets, and bell peppers onto the prepared sheet pan.
Drizzle the extra virgin olive oil over the ingredients and sprinkle evenly with sea salt, black pepper, garlic powder, and smoked paprika.
Toss everything together with your hands or tongs until well-coated, then spread into a single layer so nothing is crowded.
Roast for 20 to 25 minutes, tossing halfway through, until the chicken is cooked through and the chickpeas have a golden, crispy texture.
Remove from the oven and immediately drizzle with fresh lemon juice to brighten all the flavors before serving.