In a large bowl, combine the chickpeas, beetroot, cucumber, red onion, feta, olives, walnuts, and dill. Toss gently to mix.
In a small bowl, whisk together the olive oil, lemon juice, minced garlic, mustard, salt, pepper, and oregano until smooth.
Pour the dressing over the salad and toss everything together until evenly coated.
Adjust seasoning if needed, serve and enjoy!