Preheat your oven to 400°F (200°C).
In a bowl, combine the cooked chickpeas with olive oil, ground cumin, smoked paprika, garlic powder, salt, and pepper. Toss well to ensure the chickpeas are evenly coated with the spices.
Spread the seasoned chickpeas on a baking sheet lined with parchment paper and roast for 20-25 minutes until crispy, stirring halfway through for even cooking.
While the chickpeas are roasting, cut the mixed vegetables (bell pepper, zucchini, and red onion) into bite-sized pieces. Toss them lightly with a pinch of salt and pepper and optionally a tiny drizzle of olive oil.
Add the vegetables to the baking sheet during the last 15 minutes of the chickpeas' roasting time, or roast them separately until they become tender and slightly caramelized.
In a separate pan, gently sauté the firm tofu (pressed and cubed) until lightly golden on all sides, seasoning with a pinch of salt and pepper.
Prepare the quinoa according to package instructions if not pre-cooked.
To assemble the bowl, layer the quinoa at the base, top with roasted chickpeas, sautéed tofu, and the roasted vegetables.
Drizzle with fresh lemon juice and adjust seasoning with additional salt and pepper if desired.
Serve warm and enjoy a balanced, flavorful meal.