Traditional granola bars, which often contain oats and processed sugars, are not considered Paleo-friendly. The Paleo diet emphasizes foods that could be hunted or gathered in the past, like meats, fruits, and vegetables, and generally excludes grains and processed foods. However, there are Paleo-friendly alternatives, such as granola bars made with nuts, seeds, dried fruits and honey. Always be sure to check the ingredients to ensure they align with the Paleo diet.