zhi bi ma ? 你能给我我早上给你的那个笔吗？
Did you perhaps confuse the Pinyin version and its Chinese character concerning the measure word(s) in the sentence above?
In Pinyin, you write zhi , but the Chinese character is ge....

Quite right but it shouldn't matter much- as you accepted I believe. Let's change that to that pen. 那支笔 but zhi and ge have the same function, and we can produce a relative clause??