Here is more information from Comics Continuum:
Fox describes the episode:
Yo ho ho! It¹s a pirate's life for Peter when he gets a pet parrot. But after raising hell in Quahog and terrorizing the neighbors, Peter accidentally kills his beloved pet. Meanwhile, Chris goes with Brian to the vet and falls for the lovely intern Anna (Bynes).
Amanda has previously done voice work in Rugrats, The Day I Saved America, Charlotte's Web 2: Wilbur's Great Adventure, and Robots.
Too bad it's not a movie role that has been announced, but at least it's something new.