minecraft-server-resource-pack/packs/0-lzcustom/assets/minecraft/models/item/carrot.json

{
  "parent": "minecraft:item/generated",
  "textures": {
    "layer0": "minecraft:item/carrot"
  },
  "overrides": [
    {"predicate": {"custom_model_data":59750}, "model": "lz:food/soup_vegetable"}
  ]
}