Is mango bad for my lepoard gecko?

because i was trying to hand feed my iguana some mangos and she didnt want anything to do with me at the time, but i noticed that my lepoard gecko was trying to climb up his cage to see what i had, so i picked him up and put a piece of mango in front of him and he ate it! i wasnt sure if they are bad for him so he only had one piece.... please help me, k thanks!!