For the pre 2011 model, the part number for a Fender pickguard is #004-9687-000. There are a couple on eBay.
You can also get a custom one from WD Music here: http://www.wdmusic.com/pickguard_jbad5_300.html
All the best,
ESP Ltd B-1005, ESP Ltd Surveyor-4, ESP Ltd B-4Z (inbound) Squier VM Fretless P, Squire Affinity Jazz V Fretless (in work), Mesa Walkabout Scout