I'm a 50 something generic businessman on a 4 day stay in Pasadena and I don't enjoy eating dinner in restaurants that aren't "single diner friendly". I know, I know, I should be able to go into any restaurant and feel comfortable eating alone. Unfortunately, I don't.
I'm looking for sushi (I sit at the bar), Italian, deli (dare I ask), and anything else that may come to mind.
By the way, I had my first In-N-Out burger last night and my double/double was even better than I expected. The place was really busy, orders were coming out fast, and the wait staff were incredibly patient. I was duly impressed.