Preheat your oven to 400°F and line a large baking sheet with parchment paper.
Pat the chicken breast and chickpeas very dry with a paper towel to ensure they roast properly.
Place the chicken, chickpeas, broccoli, and diced bell peppers on the baking sheet.
Drizzle with olive oil and season with sea salt and black pepper, tossing well to coat evenly.
Roast in the oven for 20 to 25 minutes until the chicken reaches an internal temperature of 165°F and the chickpeas are slightly golden.
While the bowl base roasts, whisk together the Greek yogurt, lemon juice, and garlic powder in a small bowl until smooth.
Slice the roasted chicken into strips and assemble your bowl with the roasted vegetables and chickpeas.
Drizzle the creamy lemon-garlic sauce over the top before serving.