Clean Lean Protein wouldn't be expected to have a high post-prandial blood glucose response, but as with all protein, there could be an insulin response similar to consuming large amounts of carbohydrates.
Post-prandial glucose responses can vary between individuals. While most people would see minimal blood glucose responses to a practically 'pure' protein source like Clean Lean Protein, in rare cases, there is evidence that has revealed glucose responses could be higher.
This could be due to some people expressing higher glucagon compensatorily to insulin from protein, intolerance or allergy, or effects of catecholamines on proteolysis.
If you have specific questions regarding your blood sugar levels, please speak to your Healthcare Practitioner.