Preheat the oven to 400°F.
Peel (if preferred) and dice the sweet potato into 1-inch cubes. Toss with a teaspoon of olive oil, salt, and pepper, then spread evenly on a baking sheet.
Rinse and drain the chickpeas. Pat dry with a towel, toss with a little olive oil, salt, and pepper, and place them on another baking sheet (or with the sweet potatoes if space allows) ensuring they don’t overlap.
Cut the tofu into bite-sized cubes, season lightly with salt and pepper, then add to the baking sheet with the chickpeas for roasting.
Roast the sweet potato, chickpeas, and tofu in the oven. Check after 20-25 minutes; sweet potatoes should be tender and tofu edges slightly crisp, while chickpeas should be crunchy.
While roasting, prepare quinoa as per package instructions if not already cooked.
Prepare a boiled egg: Place the egg in a small pot, cover with water, bring to a boil, simmer for 8-10 minutes, then cool, peel, and slice.
Assemble the bowl: Start with the base of quinoa, add roasted sweet potatoes, chickpeas, and tofu. Top with sliced boiled egg.
Season with additional salt and pepper if desired, and enjoy warm.