Nasi goreng pattaya is just nasi goreng wearing a jacket bro. The fried rice inside is the same 500 calorie business as usual, and then they wrap it in a fried egg omelette which adds fat and another splash of oil from the pan.
The chilli sauce squiggle on top looks innocent but it is mostly sugar. Combine the oily fried rice, the omelette, and the sweet sauce and you are at 700, which is more than the plain nasi goreng you thought you were upgrading from.