Which of the following omelets is priced at $6.70?

The cheesesteak omelet is priced at $6.70 due to its unique ingredients and preparation method, which align it with the pricing structure of the menu items that typically feature premium ingredients. This omelet often includes a combination of grilled steak, cheese, and additional toppings, which justify its price point compared to other simpler omelets.

In contrast, options like the ham omelet or fiesta omelet may have lower prices due to their use of more common ingredients or less complex preparation, while the chili cheese omelet might also incorporate items that affect its pricing differently. Understanding the pricing of menu items requires familiarity with the ingredients and preparation techniques used in each dish, reflecting the overall value offered to customers.