The moment I tasted this dish, I knew I was hooked

1 20-ounce can crushed pineapple
1 15.25-ounce package yellow cake mix
1 cup water
3 eggs
1 1/2 sticks of butter, melted (should make 3/4 cup), divided
1 1/2 cups powdered sugar
1 lemon, zested
Whipped cream (optional)
1/4 cup pecans, chopped