It would be a pleasure to be able to share our lunch with you.
I made some lunch, but I would feel good to be able to share the calories with you.
ご質問ありがとうございます。
① "It would be a pleasure to be able to share our lunch with you."=「あなたとお弁当をシェア出来たら嬉しいです。」
② "I made some lunch,"=「お弁当を作りました、」
" but I would feel good to be able to share the calories with you."=「でも、そのカロリーをあなたとシェアできたら嬉しいです。」
ご参考までに。