Mix all the spices together in a bowl and grind to a fine powder using a pestle and mortar or a herb mill / coffee grinder. Set aside/
Coating
Mix the flours together in a large bowl.
Gently crush the rice crispies in your hands, making sure to leave plenty of whole pieces. Mix into the flour.
Add the spices and stir to mix.
Chick'n
Tear the seitan chick'n loaves into roughly equal sized pieces.
Add to a dish and cover with the buttermilk. Cover and place in the fridge for 15 mins to marinade.
Working in batches of around 8 at a time (depending on the size of your air fryer), roll the seitan pieces in the coating, spray all over with spray oil until wet, then cook in an air fryer at 200°C for 8 mins. You can also oven bake 200°C fan assisted.
Tip into a bowl and spray all over with oil again, turn them to make sure they are all covered. Cook for a further 5 mins in the air fryer at 200°C. Serve hot!