Yes, you can add egg and chocolate in your low calorie diet. You can have an egg white. Avoid consuming the egg yolk (yellow) as it is high in fat and cholesterol. When you crave to have a chocolate, try to have dark chocolate as it has lesser amount of sugar and is healthier. But keep in mind not to over eat. Anything that's had in moderation is good. Stick to eating chocolates, may be one or twice a week. This way you can satisfy your urges for your chocolate addiction. Come Easter, people will be gorging on chocolates and eggs all around, so you'll have the perfect excuse!