I have never heard of biscuits with chicken but I have seen chicken burgers where the bun is a donut. Not sure what to think of that.
A while back they had a vegan cooking show on Tv and this woman made an alternative to chicken nuggets. It was cauliflower florets dipped in buttermilk and then rolled in a whole range of spices and then baked. It ended up looking like chicken nuggets and the cauliflower was crunchy on the outside but soft in the middle.
It actually looked really nice and if I had it in front of me at the time I would have tried it. I have since looked for it on the internet but could not find this specific recipe. The one she made would have had a BBQ cajun style spices but the ones that I looked at on the internet had a different range of spices. Now I wished I had written down the recipe. Oh well it might appear one day as I am looking.