YOU SAID:

My pizza is covered in cheese.

INTO JAPANESE

私のピザはチーズで覆われています。

BACK INTO ENGLISH

My pizza was covered with cheese.

INTO JAPANESE

私のピザはチーズで覆われていた。

BACK INTO ENGLISH

My pizza was covered in cheese.

INTO JAPANESE

私のピザはチーズで覆われていた。

BACK INTO ENGLISH

My pizza was covered in cheese.