No, that was another actor. You'd probably recognize David Pryce from a variety of roles.
One thing I'm wondering is if the show going to follow the book chronology moving forward. There had been some rumblings that the events of A Feast For Crows and A Dance With Dragons might be merged to form as many as 3 seasons. But I was checking out IMDB the other day, and Peter Dinklage isn't listed in the cast for Season 5 / Episode 1. Hmmm....