Lobster is pretty healthy and delicious and is actually pretty low in carbs.
A lobster contains around 2.8 g of carbs which is pretty low when it comes to meats that have more carbs.
Also according to the USDA National Nutrient Database, one cup of cooked lobster contains 129 calories. 1.25 g of fat and 0 g of carbs.
So eating just one cup of cooked lobster is supposed to have 0 g of carbs in it meaning there are no carbs but if you eat the rest of the lobster you will consume around 2.8 grams of carbs.
It's pretty healthy to eat lobster but lobster does also contain some calories so if you're losing weight the lobster is a healthy choice of meat to eat because of the low calories.