Hate to tell ya this, Darlin’, but your Bay Laurel Tree may have Sudden Oak Death:
“In non-oak species, symptoms vary from the appearance of dead spots on leaves, in the case of California bay laurel and madrone...”
http://www.mattole.org/html/publications_article_45.html
I would consult a local arborist, ASAP. They’ll know if it’s serious or not. Hopefully it’s just an “environmental factor” which is the term I use up here when I can’t figure out what is bothering a local tree or shrub. ;)