Preheat oven to 400°F and line a large baking sheet with parchment paper.
Press the extra firm tofu with a heavy object for 15 minutes to remove excess moisture, then cut into 1/2-inch cubes.
In a large bowl, toss the tofu cubes, chickpeas, broccoli florets, and chopped red bell pepper with olive oil, garlic powder, smoked paprika, sea salt, and black pepper.
Spread the mixture in a single layer on the prepared baking sheet, ensuring the vegetables aren't overcrowded.
Roast for 25-30 minutes, tossing halfway through, until the tofu is golden and the broccoli edges are slightly charred.
Remove from the oven and immediately sprinkle with nutritional yeast and fresh lemon juice while the ingredients are still steaming.
Divide into meal prep containers or serve immediately for a high-protein, plant-based dinner.