What is the frequently cited ideal pan size for a single omelette using two to three large eggs?

8-inch pan.

The dimensions of the skillet are directly linked to the thickness and evenness of the final cooked egg layer. When preparing a standard serving size, typically consisting of two or three large eggs, an 8-inch pan is considered optimal. This size ensures that the egg mixture spreads out to an appropriate depth across the cooking surface. If a pan that is too large is used, the eggs spread too thinly, causing them to cook excessively fast and dry out before they can achieve the desired delicate texture. Conversely, using a pan that is too small crowds the eggs, leading to an uneven cook where the center remains raw while the edges overcook or brown.