I can't speak for anything but my own, but I did have a short period of misfires before I replaced all the coils that ended up being a couple of plugged fuel injectors, so if the misfire persists after the coil pack R&R you might head down that path. Or, you might check the injectors before buying the coil packs.
I'm sure there are better ways to diagnose, but to get a 'guess' at the offending injector I used a long 3/8" ratchet extension touching the fuel rail near each injector with the other end of the extension tucked into my ear. Hard to explain the difference in sound, but after listening to several you can pic out the ones that are 'different'. Not exactly scientific but it worked for me. I had to replace 2, and did it in my driveway in an hour or two. Like plug R&R, just have to remove a bunch of stuff to access the rail.
Just a thought...