Ingredients:

2-3 large eggs
Salt and pepper, to taste
Fillings of your choice (e.g., diced bell peppers, onions, tomatoes, spinach, cheese, ham, mushrooms)
Cooking spray or a little oil (to prevent sticking)
Instructions:

Prepare the Fillings: Chop or dice your desired omelette fillings into small pieces. You can use any combination of vegetables, meats, and cheese.
Preheat the Air Fryer: Preheat your air fryer to 350°F (175°C) for a few minutes. Make sure the basket or tray is clean and ready for cooking.
Whisk the Eggs: In a bowl, crack the eggs and beat them with a fork or a whisk. Season with a pinch of salt and pepper.
Coat the Air Fryer Basket: Spray the air fryer basket with cooking spray or lightly grease it with a little oil to prevent the omelette from sticking.
Add the Fillings: Pour the beaten eggs into the preheated air fryer basket. Then, sprinkle your chosen fillings evenly over the eggs.
Cook the Omelette: Place the filled air fryer basket back into the air fryer. Cook the omelette at 350°F (175°C) for about 8-10 minutes. Cooking time may vary depending on your air fryer, so keep an eye on it. The omelette is done when it’s set and slightly puffed up.
Serve: Carefully remove the omelette from the air fryer using tongs or a spatula. Fold it in half if you like, and serve it hot.
Garnish: You can garnish your air fryer omelette with some fresh herbs, such as chopped chives or parsley, and a little extra grated cheese if desired.