What would happen if restaurants charged 30% more for people who have a bmi body mass index of 30% or more?

What would happen if restaurants charged 30% more for people who have a bmi body
mass index of 30% or more?

Calculate Your BMI - Standard BMI Calculator

of course I would think of that
my bmi is 20.5
5'6"  127 lbs female / woman
age 54
race: human, caucasion white mixed