Hi Jase: Great question. Judged yes, discounted no. There are verbal and nonverbal cues that are being reviewed for a good fit with a team, office, and organization. You can enter nervous and be nervous all the way through. Nerves are seen as being really eager for the job and that's good as long as they don't interfere with your understanding the questions and answering them clearly and completely. The best way to prepare for an interview to gain confidence and not be concerned about the the entrance is to practice. You can also visualize entering the building, going into the office door, and then entering the interview room and seeing the faces of the interviewers. Imagine sitting down at the table and making small talk about the traffic and weather. Then, prepare to listen to the introductions of each interviewer (consider writing their names and titles for thank you notes but keep eye contact too). Then, listen to first question answering honestly and clearly. Gague the length of each answer, not too long and not too short. Is the S.E.A.L. (situation, experience, action you took, what you learned and outcome). Ask two quick questions to show your interest. Never about benefits or pay.
I hope this helps. Best of luck with your interviews!