Lite coconut milk is basically more watered down and as a result, it is thinner and contains less fat than regular coconut milk. I have made this Coconut Curry Chicken with both full fat and lite coconut milk but for the most comforting, delicious result, full fat is the way to go. If you are watching fat and calories, you can definitely use the reduced fat version but the curry will not be quite as rich. Sometimes this is a trade-off that's worth it to me.