Preheat your oven to 400°F (200°C) and line a large rimmed baking sheet with parchment paper.
Press the tofu between paper towels with a heavy plate for 10 minutes to remove excess moisture, then cut into 1-inch cubes.
Rinse and drain the chickpeas, then pat them thoroughly dry with a clean kitchen towel to ensure they become crispy.
In a large mixing bowl, combine the tofu cubes, chickpeas, broccoli florets, and sliced red bell pepper.
Drizzle with olive oil and sprinkle with garlic powder, smoked paprika, sea salt, and black pepper, tossing until everything is evenly coated.
Spread the mixture in a single layer on the prepared baking sheet and roast for 25-30 minutes, tossing halfway through, until the vegetables are tender.
Remove from the oven and immediately sprinkle with nutritional yeast, then drizzle with a quick whisk of lemon juice and tahini before serving.