nepenthes often do not care for direct light outside. It probably needs shade during the afternoon/mid day.

I learned that even early morning sun is not good. The plant will be o.k., give it time but get it OUT of ANY sunlight!

Moving directly into the direct sun from lower sunlight is nefver good with any plant. My Nepanthes has been growing in full sun for 2 years now. It grows like a weed, BUT it gets watered everyday, and I mean a full and complete soaking, The traps have the most intense coloration to them since they have been in full sun, but the leaves, like orchid leaves, contain a highly red color, just as people get sunburn, the pigment is to protect the leaves.
You might be able to get the plant used to the sunlight but get it accustomed SLOWLY.
good luck

It was too much too fast. Follow the above advice.