Set your oven to 200C (400F) and prepare a baking sheet with parchment paper.
Toss the drained chickpeas with olive oil, garlic powder, smoked paprika, onion powder, dried oregano, salt, and pepper in a mixing bowl.
Distribute the seasoned chickpeas evenly on the baking sheet and roast in the oven for about 20 minutes, giving them a stir halfway through to ensure even crisping.
While the chickpeas cook, rinse the quinoa and combine it with water in a saucepan. Bring to a boil, then cover and lower the heat to simmer for 15 minutes or until all the water is absorbed. Fluff with a fork and set aside.
To build your Buddha bowls, divide the chopped lettuce among four bowls. Neatly arrange the halved cherry tomatoes, diced cucumbers, bell pepper, red onion, and Kalamata olives in sections.
Add the roasted chickpeas and cooked quinoa to their own areas in each bowl. Place a dollop of hummus in the center and sprinkle crumbled feta cheese on top.