Putting Liquid Plumber down your garbage disposal could potentially cause damage to the garbage disposal so it's not recommended to use liquid plumber in a clogged garbage disposable.
Try using a plunger first and if that doesn't work then you may need to remove the garbage disposal and clean it out by taking it apart.
Drano Max Gel is a safer alternative for garbage disposals and won't damage your garbage disposal like Liquid Plumber might.
You can try putting some liquid plumber down the garbage disposal but it might damage it.