Defining "over-eating" as "eating" vis-a-vis Yom Kippur: Yoma 80b
Over-eating Terumah: Yoma 80b
Over-eating Matzah on Pesach: Pesachim 107b, 108a, 120a
Over-eating damages the food, as well as the eater: Rashi Yoma 80b
Taking care not to eat other food with a flour offering, so as not to waste it: Temurah 23a
Eating more than one needs renders someone a glutton: Eruvin 83b
Avoiding the appearance of gluttony: Shabbat 117b
Gluttony of a Torah Scholar is a disgrace of Gd's Name, among other things (which are listed in the file on behavior of Torah Scholars): Pesachim 49a Yochanan ben Nadbai is praised for eating prodigiously of the korbanot, so that nothing was left after its proper time for consumption: Keritot 28a-b