Kayla Harrison says she would fight Pena, Pennington and Vieira on the same night

Kayla Harrison is fixated on her UFC 307 opponent Ketlen Vieira … but the two-time Olympic champion tells us TMZ Sports She is SO prepared that she is ready to kick both of them Julianna Pena And Raquel PenningtonTheir asses too – that same evening!

We caught up with the UFC bantamweight contender this week… before she faces what will almost certainly be a title eliminator against Vieira on Saturday night in Salt Lake City.

While she's not scheduled to face Pennington or Peña… Harrison said she's heard that she could be asked to intervene if either the champion or challenger drops out of title contention.

“It’s the fighting game where anything can happen,” Kayla said. “For some reason I just have this weird vibe. I’m prepared, I’m ready.”

Pennington is preparing for the same outcome…said in a recent interview She also trained for the fight against Julianna and Kayla.

Harrison isn't fazed by this at all…she says she's ready to take the punches, even if it means taking three fights at 307.

“I’m ready for anything,” she said. “I’m ready for all three in the same night!”

That's obviously not an option…Harrison will fight once on Saturday. But with multiple fights in one night, the UFC began. Just look at UFC 1…when Royce Gracie fought three times.

We also caught up with the current champion to get her thoughts on her title defense against Pennington. Julianna explained what's next if she expects to walk away with the win, saying she'd like to settle the score with none other than the GOAT. Amanda Nunes!

“I think Amanda will most likely be there,” Pena said. “I do think that little green jealous monster is going to rear her ugly head because she doesn't feel like she's finished yet. She's not ready to retire yet, and she wants to be back there because she's probably sitting at home thinking, 'What?' I will do it today.'”