Preheat the oven to 180°C/Fan 160°C/Gas Mark 4 and line a baking tray with parchment paper.
Wrap the tofu in a paper towel and squeeze it in your hands to remove any excess moisture, then cut it into cubes.
Combine the tofu and chickpeas with the olive oil, smoked paprika, garlic powder and cumin in a medium mixing bowl. Toss until evenly coated.
Spread the tofu and chickpeas evenly on the lined baking tray. Bake for 25 minutes, flipping halfway through for even crispiness.
Meanwhile, prepare the dressing. Whisk together tahini, lemon juice, maple syrup, garlic powder and water until smooth in a small bowl. Add salt and black pepper to taste.
Combine the mixed salad greens, tomatoes and avocado in a large salad bowl.
Top with the roasted tofu and chickpeas, then sprinkle with nutritional yeast.
Drizzle with the lemon-tahini dressing and toss to coat. Add the hemp seeds and serve immediately.