Feather boas Make sure you have enough to cover the clothes entirely with feathers.
Yellow rubber gloves Inexpensive plastic cleaning gloves will work great.
Glue I always like to have extra glue sticks for the glue gun. It seems extra is always needed.
Rubber bands This will be used to secure the gloves.
Leggings or any pants This completes the look and you probably already have this.
Instructions
Prepare a jacket. Use an old jacket or get one at the thrift store.
Hot glue on white feather boa's to the jacket. The jacket should be entirely covered so all you see is feathers.
Make the chicken feet. Stuff some yellow rubber gloves with stuffing or newspaper. Then use rubber bands to secure them to their shoes!
Complete the look. Kids can wear black leggings or any type of pants. I also suggest that you find a white shirt to wear under the jacket. Another idea is to wear yellow tights instead of black leggings.
Notes
The cheapest chicken costume I could find on Amazon was over $20. I am sure you could make this for $5 or less. I think it is so cute.