If you have a parrot who is a fussy eater, or your parrot wont eat vegetables, then offering foods that are widely enjoyed by most species, with some tasty and nutritious fruit content, will encourage your parrot to explore their bowl more. The more ingredients you can offer the better, giving them a higher chance of finding foods they enjoy. Ensuring the food is of a high quality, with bioavailable nutrients, vitamins and minerals means your parrot will be getting the great benefits of fresh food, even if they only consume a small amount.
Always seek the support of a professional when changing your parrot's diet. Diet changes can take time and require patience and understanding. Never rush the process.