No, don't get baby food, it's too mushy for an adult zon. My bluefronts are the best eaters of the lot (I have 6 zons) and the male is, by far, the best of them. He is always the first one to fly over as soon as he sees me getting close to their platform with a plate in my hand (I use disposable white paper plates to feed them) and can hardly wait for me to put it down to the point that I have to use the plate to kind of push him back so I have enough room to set it down (can't use my hands with him, he is a wild-caught that was used as a breeder his entire life).
I use 'Small White Beans' only (
http://www.amazon.com/Goya-Premium-Smal ... hite+beans - but they don't have to be Goya, any brand will do) because they are the kind that has the lowest level of the bad lectin that all beans have). They come in a can and all I do is rinse them in a colander under running water. If you cannot find the Kashi pilaf in your supermarket, get brown rice, barley and see if they have wheat kernels and quinoa (most supermarkets do nowadays). Cook them separately (they need different cooking times) but all of them to a hard 'al dente', mix the beans in, sprinkle some flax seed (you can also get it at a regular supermarket), some chopped broccoli, peas and carrots and sweet corn (all in the frozen aisle of the supermarket) and season with chili powder. This is a very simple and very basic gloop recipe but it works great to start them off.
At night and after he goes to sleep, take the seed bowl out of his cage and, in the morning, one hour after he wakes up, give him some warm gloop (they like warm things so it's an added attraction to make them try the new food) with some seeds mixed in. He will, most likely, not eat any of it the first day but he won't starve because, at sunset (around 4 pm), you will give him a level 1/4 measuring cup of his seed mix (make it a budgie one so it takes him longer to eat it and he ends up eating less protein than with a parrot one). And keep on doing this every day. Soon, you will see that he starts eating the seeds mixed in the gloop and soon after that, he will start eating the grains (you will find little empty 'skins' in his bowl). Once you see him eating the fresh corn, peas and carrots (they all like these veggies because they are sweet and juicy), you can start adding other stuff to the gloop making it a more complete recipe (wheat kernels, oat groats, different kinds of rices like black japonica, red Himalayan, lentils, sweet potatoes, butternut squash, artichoke or palm hearts, etc)