No, it is not possible to add or remove a proton from an element to create another element using a microwave. Changing the number of protons in an atom would alter its atomic number, and therefore its identity as a different element.
Microwaves are a form of electromagnetic radiation and are not capable of directly modifying the atomic structure of elements. They primarily interact with the water molecules or other polar molecules present in food, causing them to vibrate and generate heat through molecular friction.
To change one element into another, a nuclear reaction would be required. Nuclear reactions involve changes in the atomic nucleus, such as nuclear decay, fusion, or fission. These processes typically require much higher energies and specific conditions that cannot be achieved through microwave radiation.
In summary, while microwaves are effective at heating food, they cannot be used to add or remove protons from an element to create a different element.