To make these Copycat Pizza Hut Breadsticks gluten free, replace the bread flour with a gluten-free bread flour blend or a high-quality gluten-free all-purpose flour blend designed for yeast baking. Make sure the dry milk powder, Parmesan cheese, tomato sauce, and all dried seasonings are certified gluten free, as some packaged products may contain hidden gluten or cross-contact risks. Gluten-free dough may be softer and less elastic than traditional dough, so you may need to handle it more gently and avoid adding too much extra flour. The rise time and final texture may also vary slightly depending on the flour blend used.