Here's why:
* Subject: The subject of the sentence is "Bread baked with fresh herbs".
* Verb: The verb is "is".
* Subject Complement: A subject complement is a word or phrase that renames or describes the subject. In this case, "extremely tasty" describes the bread.
Subject complements typically follow linking verbs like "is," "are," "was," "were," "seems," "appears," etc.