In a blender, add sauce ingredients: chopped mangoes, chili sauce, rice vinegar, soy sauce, fish sauce, lime zest, lime juice, ginger, garlic, and turmeric. Blend until smooth. Add a little sugar if too sour or more chili sauce to add spice.
In a large bowl, combine flour and salt. Add the chicken slices and coat well. In a wok or large pan, heat oil over medium high heat. Once thoroughly heated, fry coated chicken slices until cooked through, 3-5 minutes per side. Remove to towel lined plate.
Clean out wok and reheat to medium high heat. Add the red pepper slices and blended mango sauce. Bring the sauce to a low boil and reduce to medium low heat. If too thick, add 3-4 tablespoons coconut milk. Continue to simmer until red pepper just begins to soften, 3-4 minutes.
Gently stir in chicken slices and add cubed mango if desired. Simmer until chicken is heated through.
Serve immediately with jasmine rice and cilantro.