A trick I learned is to put your chips on the plate, top them with some shredded cheese, put your topping on, then top with more cheese before microwaving.
Before we started putting the first layer of cheese on, our toppings used to slide off our chips.
John
"But where our hearts truly lie is in peace and quiet, and good tilled earth; for all Hobbits share a love of things that grow." Bilbo Baggins (There and Back Again, A Hobbit's Holiday)