Answer:
Take one out and scratch my head I am now black but once was red.
Die without me, never thank me. Walk right through me, never feel me. Always watching, never speaking. Always lurking, never seen.
The moon is my father. The sea is my mother. I have a million brothers. I die when I reach land.
What is often returned, but never borrowed/
Different lights do make me strange, thus into different sizes I will change
This food is a tortilla filled with cheese and sometimes chicken before being heated or cooked.