If I eat bread which is mezonot in a sandwich form do i say Mezonot or wash and say Hamotzi? Or does it depend whether or not i have a ’seudah kvu’a’ (a permanent meal)? What about if I eat 1 piece of Pizza for lunch?? Thankyou

There is a big dispute whether there is such a thing as "mezonos bread" which looks and tastes almost like regular bread. I ascribe to the position that this is hamotzi and requires netilas yadayim even if one eats a small amount. I feel that pizza is a safek hamotzi- with most opinions considering it to be hamotzi. I therefore advise people who eat one slice of pizza to make hamotzi on a slice of bread