Jamaican Chicken Curry

Name: Jamaican Chicken Curry
Ingredients: 1 Pound chicken cut into one-inch cubes (I used half a whole chicken cut into serving size pieces); 2 Teaspoons Jamaican curry powder; 1 1/2 Teaspoon salt; 1/4 Teaspoon black pepper powder; 2 Tablespoons oil; 1 medium-sized onion, chopped; 2 Scotch bonnet pepper or habanero peppers, chopped; 1 Teaspoon ginger garlic paste; 2 Teaspoons garlic, minced; 2 Tablespoons tomato puree; Pinch of turmeric; 1 medium-sized potato, peeled and cut into cubes; 1- 1 1/2 Cup water; Cilantro, for garnish; White rice, cooked, for serving