The best thing to feed her would be a good layer feed. I would do that and feed very little else except for a few healthy treats like a few meal worms or some leafy greens.
I believe I have read that onions can be toxic to birds and cause hemolytic anemia. Might want to do some research on that as I am pulling that off the top of my head and haven't researched it recently. I would definitley stop feeding her things like chips, dip and other unhealthy foods. Many...