No, most professional chefs do not use non-stick cookware, especially non-stick fry pans. Before knowing why, let’s understand what non-stick cookware is. Non-stick cookware refers to utensils with surfaces from which the food simply slides off.

Typically, a layer of Teflon makes up the non-stick surface of a non-stick fry pan.

Restaurants don’t have non-stick pans as they do not match the basic demands of a busy kitchen. For a chef who has to send a dish out every two minutes, non-stick cookware is not a viable option as it wouldn’t last longer than a week. 

Stainless steel pans are non-corrosive, so they don't react with foods and leach into them. They can however stick to food if it is cooked without oil. They're good for sautéing, pan-frying, stir-frying, braising and searing meat, and oven-cooking. 

A skillet is a type of pan that is used to cook many types of food. A skillet has a larger and deeper surface than the typical frying pan, and has a different design. Skillets have curved sides that flare outward, making them ideal for sauteing or even stir-frying foods. This style pan is also wonderful for moving ingredients around quickly or tossing them without using a wooden spoon.