There are several traits that can help.
Humble Beginnings (Region trait) seems to be the simplest. Let's you act as if you have Catch Off-Guard with the frying pan. Not the best though imo.
Rough and Ready (Equipment trait) allows you to attack with a frying pan without the -4 improvised weapon penalty (without needing the Catch Off-Guard feat) AND gives a +1 trait bonus to attack rolls, but will require you to have profession (cook) or something like that. Whatever profession you can think of that uses a frying pan.
Surprise Weapon (Combat trait) gives a +2 trait bonus to attack rolls with improvised weapons. This is pretty sweet if you did pick up the Catch Off-Guard feat.
Stylistically, Improvised Defense (Combat trait) would be pretty cool. But only useful when you aren't attacking.