The festivities took place at Chicago Theatre. The nearby United Center, meanwhile, hosts Saturday's network-televised event.
Among those weighing in were UFC flyweight champion Demetrious Johnson (125 pounds) and challenger John Dodson (124), who headline the event. Donning a Pop Rocks T-shirt and holding a bag of the candy in his mouth, Dodson made the 125-pound limit with a pound to spare.
Quinton "Rampage" Jackson (204) and Glover Teixeira (206), who co-headline the show, also hit the scale and engaged in a heated staredown.
The full weigh-in results included:
MAIN CARD (FOX, 8 p.m. ET)
Champ Demetrious Johnson (125) vs. John Dodson (124)
Quinton Jackson (204) vs. Glover Teixeira (206)
Donald Cerrone (155) vs. Anthony Pettis (155)
Erik Koch (145) vs. Ricardo Lamas (145)
PRELIMINARY CARD (FX, 5 p.m. ET)
T.J. Grant (155) vs. Matt Wiman (156)
Clay Guida (146) vs. Hatsu Hioki (146)
Pascal Krauss (171) vs. Mike Stumpf (170)
Ryan Bader (205) vs. Vladimir Matyushenko (205)
Shawn Jordan (251) vs. Mike Russow (256)
Rafael Natal (185) vs. Sean Spencer (186)
PRELIMINARY CARD (Facebook, 4:30 p.m. ET)
David Mitchell (171) vs. Simeon Thoresen (171)
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