*Chicken is much easier to slice if partially frozen. It will thaw quickly once sliced. You can slice your chicken and red bell peppers in advance for even quicker meal prep.
**I would start with 3 tablespoons brown sugar and add more to taste at the end -the amount will depend on how sweet your mangoes are, how sweet you want the sauce and how spicy you want it (more brown sugar to balance more sriracha). I use all 5 tablespoons because I make the sauce quite spicy.