Food Chain mana can only be used to cast creature spells. So revised ...
Squee + foodchain + goblin bombardment
Squee + foodchain + emrakul
Not quite infinite, but...
Squee + Food Chain + Skirk Prospector = Infinite mana
Squee + Food Chain + Goblin Sledder/Mogg Raider/Foundry Street Denizen/Knucklebone Witch/Genzo = Infinitely large creature
Squee + Food Chain + Skirk + SGC/Sharpshooter = Infinite damage
Ahhh, here we go!....
Squee + Food Chain + Skirk Prospector +
Skirk Drill Sergeant/Grenzo = Create infinite creature mana, create infinite mana, put every goblin from your deck into play
And a revision on an existing combo...
Skirk/Food Chain + Kiki-Jiki + Lightning Crafter = Infinite Damage... Food Chain works the same as Skirk Prospector here giving you a way to get rid of your LC tokens so Kiki-Jiki can reenter play untapped