Sunburn

2

Old leaves?

1

Not enough water = yellow Too much sun = crispy

1

It’s most likely going to be either a watering issue (to much water or to little), pothos should be watered when the top 25-30% of the soil is dry. Or as this is a very variegated specimen, it is not getting enough light. Variegated plants don’t photosynthesis on the white parts. So they need more light to compensates

1

too much light

1