My health professional just told me that irritability can be caused by the need for B vitamins. Irritability is one of my first signs of getting gluttened. I am still not sure if it is "caused by" or if it just makes it hard to be nice. You may want to check your nutrient status.
One more thing: I haven't been able to eat malt balls for many years, but I recall the malt is usually made with barley. I think they do also contain wheat. Hard boil some eggs instead and be happy! ha ha ha I know, it doesn't quite give the same feeling! But who wants the grouchy feeling In spite of a little in good taste.
I threw cheese through a window once. I had a sudden surge of irritability for no reason. Well, I found out later that I was highly intolerant of cheese. I therefore conclude avoiding foods that cause these problems is best.
I get extremely irritable a while after I've been glutened for some reason. Today it happened after I had a fountain drink of Diet Dr. Pepper. After consuming gluten I get immediate symptoms in my fingertips. They turn white and feel cold and numb almost like there is no circulation. Then a few hours later I felt the irritated about everything.