I wouldn't necessarily call these keto-friendly as written, but they're not terrible. Chicken is keto-friendly, although chicken breast is not as great on keto as a chicken thigh. And bell peppers are low carb, but the green peppers have less carbs than these colorful ones. So, as we have this recipe written, these aren't keto-friendly shish kabobs. They're not terrible, but they're not fantastic. Using chicken thighs and only green bell peppers would make this more keto-friendly, but not as delicious.