Place the salt and lemon juice in a bowl then add the chicken. Stir to combine then cover and place in the fridge for 20 minutes
In a jug combine the ginger, garlic, cumin, paprika, garam masala and yoghurt. Add this to the chicken and stir well to coat the chicken in the mixture. Cover and place back in the fridge for a minimum of 4 hours
Combine the chopped vegetables and curry paste. Tip onto a baking tray and drizzle with the oil. Roast at 200C for 20 minutes
While the vegetables are cooking, preheat the grill to a high setting. Thread the meat onto the skewers and brush or drizzle with oil. Place the skewers on a baking tray and put under the hot grill for 5-6 minutes each side until slightly charred and cooked through