Strange lighting on Blender model

Hello! I’m currently creating a 3D game but keep running into an issue with my models. They seem to have a strange lighting issue as shown below:

Here is my quality settings for the project as well:

I’m also using the Bloom script from the Standard Assets package if that makes a difference at all.

Thank you to anybody that may be able to help!

This issue was solved by increasing the bias option in the directional light game object. To deal with the jagged shadow edges that resulted from increasing the bias, I used the antialiasing image effect from the standard assets package. This resulted in smoother shading and removed the above lighting effect. Thanks everyone for the help!