Nexan-s_Custom_Resources/assets/minecraft/models/item/golden_apple.json

{
  "parent": "minecraft:item/generated",
  "textures": {
    "layer0": "minecraft:item/golden_apple"
  },
    "overrides": [
	{
		"predicate": {
			"custom_model_data": 1
		},
		"model": "custom:item/catfood1"
	}
  ]
}