1. Grilled cheese and tomato soup. The cheese and the acid in the soup are hard to digest at the same time. So you can end up with a stomach ache. Plus, the soup has a lot of sugar, the grilled cheese has a lot of fat, and they're both high in sodium.
2. Chips and salsa. Mostly because you end up eating a ton of corn chips to get a relatively small amount of vegetables. And salsa isn't as filling as something like guacamole, which has healthy fats in it.
3. Fruit as dessert after a meal. It's better than a big slice of cake. But your body digests animal protein a lot slower than the carbs in fruit. So eating meat and fruit back-to-back can create "digestive confusion" and make you feel bloated and gassy.
Also, wine with dessert isn't a great idea, because the alcohol boosts your insulin production. Then your body decides it doesn't need the sugar from the dessert, and ends up storing those calories as fat.
4. Sausage and biscuits. Obviously it's not the healthiest breakfast because of all the fat in it. But it also makes your insulin levels spike. So your body ends up using the carbs for energy first, and storing most of the fat.