How can I change his dietary attitudes?

My husband is a strictly egg & chips, pie and beans, roast beef on Sunday man. Even when we are abroad I cannot get him to try the local menus. He has to have chips with everything together with bread and er yet he still stays as thin as a beanpole. I want to be more adventurous and try out different cuisines from different countries - can anyone help me with my husband who wont even make the effort to try out different menus and recipes?