King is a regular in the Norway national team and impressed in their 1-0 friendly defeat to England last week, but he claims that his form in pre-season and international matches is being ignored.
"I did a very good pre-season and was surprised when I did not start the first match of the season against Cardiff," he told reporters.
"I came back from holiday in good shape and heard from people in the team that I was one of the very best players in the running. It is very frustrating. The situation in Blackburn is very strange.
"Had I scored a hat-trick at Wembley, it is still not certain I would start for Blackburn in the next match. The coach has his reasons. I just have to respect them and keep working hard."
King has scored two goals in 31 Blackburn starts since signing on a permanent deal in January 2013.