Love this thread. I've been vegetarian since 1984. It came as a divine inspiration for which I am forever grateful.

Here are a few restaurant choices that come to mind. I'll definitely follow up later with more. Another very helpful addition coming to mind is places to source quality vegetarian/vegan food products.

Hong Kong (Lantau Island): Po Lin Monastary (vegan) - http://www.hong-kong-travel.org/PoLinMonastery.asp
Wonderful lunches next to giant Buddha. Suggest eating in lower cost restaurant where you eat with locals using paper plates and shared tables.

Kapaa (Kauai) also Portland: Blossoming Lotus (vegan) - blossominglotus.com
Vegan dinner spot on Kauai (haven't visited Portland location)

Orange County, CA: Mothers Market and Kitchen - mothersmarket.com
Good quality, reasonable priced vegan or vegetarian breakfasts and lunches.