Found Suspicious Particles in Carl's Burger Order

Hello, we frequently order from Carl's Burger because we love the taste and quality. However, during our recent order, my son opened his burger and noticed small, grainy particles inside that looked unusual. Based on videos he’s watched, he suspected they might be samba beetles. After doing some research, I noticed similar comments, though I personally think they might be green lentils.

I’m not entirely sure what these particles are, and I would like clarification about what was inside the burger. This unexpected discovery has raised concerns, and I hope you can address this issue promptly and provide more information. Thank you in advance for your response.