WHISK together eggs, milk, cheese, tomato, jalapeño, salt and pepper.
POUR into well-greased 12-oz microwave-safe mug or mason jar.
MICROWAVE on High for 30 seconds; STIR. MICROWAVE for 70 to 80 seconds or until eggs are puffed and set.
Substitute prepared salsa for the chopped tomato and jalapeño if desired.