Smashed meatball kebab platter with herby green yogurt

Name: Smashed meatball kebab platter with herby green yogurt
Ingredients: 24 meatballs (beef, lamb, pork or plant-based); olive oil for drizzling; 2 tsp shawarma spice blend; parsley and mint to garnish; 250g giant wholewheat couscous; 1 lemon juiced; ½ small bunch of parsley leaves only; ½ small bunch of mint leaves only; ½ red onion sliced; 4 roasted red peppers from a jar sliced; 4 tbsp greek yogurt; handful of parsley leaves; handful of mint leaves; ½ garlic clove; squeeze of lemon juice