Answer:
Against the sun I protect your eyes and am often worn on the face of spies
You throw away my outside, you cook my inside. Then you eat my outside and you throw away my inside. What am I?
I have an eye, but I can't see. I usually have to work with something in my eye. What am I?
I am a word. I become longer when the third letter is removed.
I can be swallowed, but I can also swallow you. What am I?
A little house full of meat, no door to go in and eat.