What can I feed my 10 month old?

my son is 10 months as of today! Up until a week ago he gave me no trouble in the high chair. Now he won't eat anything he use to. I even tried those gerber graduates dinners like chicken stew and raviolis. He liked them the first time but not anymore. I dont know itf its being in the chair or the foods. because sometimes he will eat and sometimes he won't any advice? I'm a first time mom!!