Police say three suspects, one wielding a samurai sword and another carrying a hunting knife, entered Twice the Deal Pizza just before 11 p.m. on Valentine's Day.
Investigators say they demanded money, and fled with an undisclosed amount of cash before officers arrived.
Two boys — one 17 and the other 15 — are charged with two counts of robbery, two counts of uttering death threats, disguise with intent and possession of dangerous weapons.
A 14-year-old boy is charged with robbery and disguise with intent.
Investigators say they have recovered the samurai sword.