What does this verb ending mean?

Recently, i've decided to play Persona 4 in Japanese as my first "big boy" immersion experience (previously i used to read an article a day in the elementary school section of mainichi shinbun and the middle school section of asahi shinbun for immersion, with my only "decently-sized" immersion so far being the Rosario + Vampire manga)

Im still early on in the game, but i've encountered this construction twice so far and i have 0 clue of what its supposed to mean, googling it yields nothing and yomitan doesnt pick it up either

The verb ending/grammatical construction is "っつったら"

Here's the full dialog where it appears:

お前が食うっつったら、 きっといっぱいもらえるぜ!

Anyone got any idea of what it means?

by b0wz3rM41n