Hi, so I watched this video a while back, but it's got a ton of tips on how to make a balanced chop recipe. It's a bit long, but helped me a ton:
If you prefer a written explanation, I can provide that too
There's also a thread containing links to chop recipes on this forum shared by other bird owners:
Thanks to a wonderful suggestion by chris-md, we decided to create a resource thread for all the chop recipes posted by our members. Each link will take you to a chop recipe or to tips that can make your chop more interesting for your birds. We think they will be easier to find if they are all...
www.parrotforums.com
I'd say a good diet for your bird would be about 40% vegetables, herbs, etc(any fresh greens and stuff), 10% fruits(maybe even less, try avoiding fruits high in sugar) and the other 50% is majority pellets and some wholegrains(can be cooked and added to chop or fed dry with pellets), and a small bit of seeds(birds NEED seed in their diet, just not an excessive amount. Seeds contain essential fatty and amino acids that aren't found anywhere else. Leave out sunflower seeds for only training or treats since they're very high in fat)
The percentages don't matter too much, just make sure about half of the diet is fresh produce(fruits must be limited) and the other half is pellets, grains, and seeds(make sure not to give too much!)
You can also give your bird other goods, like bird-safe flowers and spices to make their meals more interesting.
Hope this helps!