"cooked unseasoned pulverized chicken
." It would take a betta a long time to digest that, their stomachs arent made for those kinds of foods. Even beef heart, which some try to feed, can only be digested in very high temps.
I really don't think salmon is a good idea. Why risk your bettas health because you selfishly wanted to feed it something it wasnt made to digest? Not trying to be mean at all here, just realistic. ^^'