Heat oil in large frypan. Cube chicken into bite size pieces and brown in hot oil. Meanwhile, in a large saucepan, boil noodles in water until soft, then drain. Add hot cooked noodles to chicken in frypan and pour in gravy and peas. Stir together until ingredients are covered/coated with gravy. Cover frypan, reduce heat to medium low and let simmer for 10 minutes until gravy and peas are hot. Serve directly from the frypan.