1) While I was abroad, I was surprised that you can eat fruits along with their skin.
海外にいた間、果物を皮ごと食べられるので驚きました.
While I was abroad：海外にた間
I was surprised that：驚きました
you can eat fruits：果物を食べられる
along with their skin：皮ごと
2) While I was abroad, I was surprised that you can eat fruits without peeling them.
海外にいた間、果物の皮をむかずに食べられるので驚きました.
I was surprised that you could eat the skin on some of the fruits overseas.
It was shocking to see people eat the skin on fruit while I was abroad.
1) I was surprised that you could eat the skin on some of the fruits overseas.
「海外の果物の皮を食べれることに驚いた。」
「果物の皮」は the skin on the fruits と言えます。
2) It was shocking to see people eat the skin on fruit while I was abroad.
「海外で果物の皮を食べる人を見て驚いた。」
海外に行った時に日本では皮を食べない果物の皮を食べている人を見てびっくりした場合なら、このように言えます。
ご参考になれば幸いです！
モロッコ 
日本 
