In a large bowl, whisk together tomato puree, olive oil, lemon juice, paprika black pepper, salt, garlic and ginger until fully combined.
Pour sauce in to the cubed chickens and mix well. Cover and put in the refrigerator at least 2 hours.
Preheat grill or grill pan to medium-high heat.
Thread chicken cubes, cubed pineapple and diced bell pepper alternately onto skewers.
Place skewers on preheated grill pan, and brush with reserved marinade. Cook 5-6 minutes each side until the chickens cooked well.
Serve with a sprinkle of cilantro.