Most beans, including red kidneys, are relatively high in carbs but are also high in fiber. So they are not out of the question, but must be strictly limited. The issue with chili is what is the ratio of beans and tomatoes (high carb and cheap) to meat and peppers (low carb and more expensive). If this is chili out of a can forget it. The chili in cafeterias and bars also usually has too much beans. I make chili at home with alot of meat, onions and peppers but no beans at all. My wife (who doesnt do low carb) adds some seasoned beans to hers and I eat mine over crumbled mexican fresh cheese.