How to Fix Item Render in Minecraft Bedrock Edition

They recently added a new component (I mean, it was added in an earlier version as well, but it was pretty pointless at the time) that you can use to scale, position, and rotate the item in your main and off-hand, which is currently only possible with custom items and not vanilla items. Here's an example; make sure your item format version is 1.16.100:

Example of Giant Item Texture

{
  "format_version": "1.16.100",
  "minecraft:items": {
    "description": {
      "identifier": "custom:item",
      "category": "Items"
    },
    "components": {
      "minecraft:render_offsets": {
        "main_hand": {
          "first_person": {
            "rotation": [ 0, 0, 0 ],
            "position": [ 0, 0, 0 ],
            "scale": [ 1, 1, 1 ]
          },
          "third_person": {
            "rotation": [ 0, 0, 0 ],
            "position": [ 0, 0, 0 ],
            "scale": [ 1, 1, 1 ]
          }
        },
        "off_hand": {
          "first_person": {
            "rotation": [ 0, 0, 0 ],
            "position": [ 0, 0, 0 ],
            "scale": [ 1, 1, 1 ]
          },
          "third_person": {
            "rotation": [ 0, 0, 0 ],
            "position": [ 0, 0, 0 ],
            "scale": [ 1, 1, 1 ]
          }
        }
      }
    }
  }
}

The result should be a normal sized item Enjoy!