Season 4-6 chicken breasts with salt and pepper. Heat 1 tablespoon olive oil in a large skillet over medium heat. Add chicken breasts and cook for 5-7 minutes per side, until golden brown and mostly cooked through. Remove to a plate and cover to keep warm.
Add the 1/2 cup diced onion, 1 red bell pepper, diced and 2-3 cloves garlic to the skillet and cook for about 5 minutes, or until vegetables begin to soften.
In a small bowl, whisk together the 1 cup chicken stock and 1 tablespoon cornstarch. Add to the skillet, along with the 1/4 teaspoon red chili flakes and 1/2 teaspoon turmeric. Bring to a simmer, stirring occasionally, until sauce thickens slightly.
Stir in the 1 13.6 oz. can coconut milk and simmer for another 3-5 minutes. Stir in the 2 tablespoons lime juice and 1/2 cup heavy cream, then return the chicken to the pan. Season with salt and pepper, to taste. Continue to cook for an additional 5-10 minutes, or until chicken is completely cooked through. Sprinkle with 1-2 tablespoons chopped fresh cilantro before serving.