Long Time No See: Jiraiya Returns! (E53)
Naruto gorges himself on a huge watermelon he brought for Jiraiya.
Live or Die: Risk it All to Win it All! (E56)
Early in the episode, Jiraiya takes Naruto out for ramen and Naruto gets bloated after six bowls.
A New Training Begins: I Will Be Strong! (E86)
Naruto buys and eats a lot of food from a festival.
The Dark Creeping Clouds (E155)
Naruto is briefly stuffed after each some curry.
Mix It, Stretch It, Boil It Up! Burn, Copper Pot, Burn! (E168)
The food the ninja chefs prepare is delicious, but those who eat it just eat more of it and become fat. This happened to Ayame when she was kidnapped.
The Fake Smile (E36)
Naruto eats his fill at a hot spring.
The Two Charms (E95)
In the omake, Naruto, Sai, Kiba, Shino, Yamato and Hinata all compete in a ramen eating contest. With almost everyone ending up sick, except Hinata who won in the end.
Naruto: Outbreak (E183)
In a flash-back to the days of the original series, Naruto drowns his sorrows in ramen after making Sakura mad, becoming heavily stuffed as a result.
An A-Rank Mission: The Contest (E309)
In another flash-back, Naruto enters a Bean Jam Bun eating contest along with Choji. However, Naruto became too full during the first round and subsequently lost.