Basically, yes. They’re forcing you to purchase food, whether you want it, intend to consume it, or get to consume it.
And FWIW in the restaurant industry meal breaks are usually not a thing, so it is very common to order food and just have to scarf it down whenever you’re not using your hands or in front of guests. I used to unwrap, consume, and dispose of the packaging for a sandwich in the time it took me to walk from the door to dry storage.
Edit: also IIRC wage deductions are usually illegal unless for uniforms or ordered by a court. This is probably an easy case.