Consumers’ demand for customization along with more healthy food and snacking options has led to the emergence of a new fast casual category — the potato concept. French Fry Heaven — which makes French fries 50 ways in nearly 20 locations — and Potatopia, an East Coast brand that allows guests to create their own baked potatoes by topping them with a variety of meats, cheeses, veggies and sauces, seem to be cashing in on this trend. And they’ll soon have a new competitor.