What is the sticky slimy thing on grilled chicken?

Here's why:

* Chicken Fat: Chicken has a layer of fat beneath the skin. When you grill chicken, the heat melts this fat, and it starts to render out.

* Sticky and Slimy: As the fat melts, it can become sticky and slimy, especially as it mixes with the juices from the chicken.

* Flavor Enhancement: While it may look unappetizing, this rendered fat adds a lot of flavor to the chicken. It's a natural basting agent.

Important Note: If the sticky, slimy substance has an off-color or smell, it could be a sign of spoilage. In this case, it's best to discard the chicken.