Chicken Skewers!

Marinade
3 tbsp yogurt
2 tbsp oil
1 tsp mustard
1 tsp tomato paste
1 tosp lemon juice
1/2 tsp salt
1/4 tsp black pepper
1/4 tsp garlic powder
1/2 tsp paprika
1/4 tsp turmeric
Skewers
Wooden sticks
500 g chicken, cubed
1 red onion
1 red bell pepper
1 green bell pepper