After you appear in court and state that you represent yourself, then the Prosecutor can speak with you about an offer.
Before you are officially proceeding pro per/pro se, it may appear to be intimidation by the Prosecutor to offer a deal [plead, or else ...] & if you are represented by counsel, it is an ethical violation to communicate with you, & most Prosecutors want you to realize you have the right to take the case to a jury trial.