Prepare the couscous. Add the couscous to a heatproof bowl and pour over the boiling water or reduced-salt stock. Cover and leave for 5–10 minutes, then fluff with a fork. Stir through the olive oil, lemon juice, parsley and black pepper, then set aside.
Make the meatball mixture. Add the chicken mince, red onion, garlic, egg, breadcrumbs, ground coriander, cumin, red chilli powder, garam masala, oregano, mixed herbs, salt and black pepper to a large bowl. Mix until just combined.
Shape the meatballs. Divide the mixture into around 16–20 meatballs. Try not to overwork the mixture so they stay tender rather than becoming dense.
Cook the meatballs. Heat the olive oil in a large non-stick frying pan over a medium heat. Add the meatballs and cook for around 12–15 minutes, turning regularly, until browned all over and completely cooked through.
Make the dressing. Mix the Greek yoghurt, lemon juice, garlic, oregano, olive oil and black pepper in a small bowl. Add 1–2 tablespoons of water if you prefer a looser consistency.
Prepare the salad. Add the lettuce, cherry tomatoes, cucumber, red pepper, red onion, olives and parsley to a large bowl and toss gently.
Assemble. Divide the herby couscous and salad between four bowls or meal-prep containers. Top with the chicken meatballs, crumble over the feta and finish with the lemon yoghurt dressing.
Serve. Enjoy straight away, or keep the dressing separate if preparing ahead so the salad stays fresh and crisp.