Grilled vegetable and halloumi skewers with warm salsa verde

Name: Grilled vegetable and halloumi skewers with warm salsa verde
Ingredients: 400g/14¼oz halloumi cheese, cut into chunks; 1 red pepper, seeds removed, cut into chunks; 1 green pepper, seeds removed, cut into chunks; 1 yellow pepper, seeds removed, cut into chunks; 1 red onion, cut into wedges; 1 courgette, cut into chunks; 2 tbsp olive oil; ½ bunch fresh parsley; ½ bunch fresh tarragon; ½ bunch fresh chervil; 2 tbsp capers, drained; 2 garlic cloves, roughly chopped; 150ml/5¼fl oz olive oil; mixed salad leaves