Curried Coconut Chicken

Ingredients

• pounds boneless skinless chicken breasts, cut into 1/2-inch chunks
• salt and ground black pepper to taste
• tablespoons vegetable oil
• tablespoons curry powder
• onion, thinly sliced
• garlic, crushed
• can stewed, diced tomatoes
• can coconut milk
• can tomato sauce
• tablespoons sugar