Melted butter in a pot over medium heat. Stir in flour and mix into a roux.
Whisk in milk and keep stirring for about 5 minutes until it starts to thicken.
Stir in grated cheese and season with salt, black pepper, paprika, chilli powder, garlic powder, and the crumbled bouillon cube.
Once thickened, remove from heat and add in the shredded chicken, chopped onions and coriander. Toss to combine. Set aside to allow to cool down.
Mix together both Panko and golden breadcrumbs in a shallow bowl. Place beaten egg in a separate bowl.
Scoop a tablespoon of the chicken mixture and shape it into a ball. Dip into beaten egg and then coat with breadcrumbs. Repeat with the remaining chicken mixture.
Preheat air fryer to 200°C. Brush the air fryer basket with a layer of oil.
Place the chicken croquettes into the basket. Brush them with oil and cook for 5 minutes.
Roll the croquettes to the other side, brush with more oil, and cook for another 5 minutes until golden in colour.
Allow to cool down for a few minutes before serving.