Food that you buy in the grocery store must have, by law, all ingredients listed in order of weight. Different common spices and herbs are just listed as spices/herbs without naming them.
If it has ingredients that can cause allergic reactions, soy, milk products, nuts etc. it must list them.
AFAIK, food that you buy at a restaurant chain does not......
Some people are allergic to various spices. Food companies should list each spice.
If I eat more than a trace of black pepper, I have trouble breathing and talking. Plus, I scare everyone around me because they think I am about to go into anaphylactic shock (I never do). Every ingredient should be listed, not just the most common allergens.