Chain noise, fixed gear
Looks a little tight. There should be +/- 0.5 inch vertical movement of the chain possible halfway between the sprockets.

Park tool has a great video on single speed chain replacement: 
                
             (link starts the video at the tensioning segment.)

Readjust tension and see if it makes a difference. Also make sure the wheel is parallel to the frame.

1/8 in (3.2 mm) wide chains are typically used on bikes with a singlespeeds, but 3/32 in (2.4 mm) chains are used also. Compare the new and old chain width. If it's the same it's good. ('Width' here means the spacing between the inner plates.)

Did you replace the front and rear sprocket with the chain? Check the sprockets for wear, especially the rear one.