Savannah Chrisley is all set to speak at the Republican National Convention Tuesday — now, we have a sense of what she’s gonna say … her speech will touch on her parents.

The reality star tells TMZ … she’s gonna torch the Department of Justice here in a little bit during her spotlight at the RNC in Milwaukee — specifically, to call them “corrupt” and slam how they handled Todd and Julie Chrisley‘s criminal tax case a couple years back.

Savannah says she believes, if re-elected, Donald Trump will right these wrongs — and she’s going to tie her parents’ conviction to what she characterizes as the weaponization of the DOJ.

SC adds this … “We need to have a justice system that is fair, and right now, we have a very two-faced justice system” — going on to explain she hopes to use her parents’ case — which she believes was a false conviction — to raise greater awareness of her perceived flaws in the criminal justice system in America, especially from the federal level.

You may remember … Todd and Julie were found guilty on federal charges of bank fraud and tax evasion and each were sentenced to several years behind bars … 12 years for Todd and 7 for Julie. They’re currently serving their sentences.

As for the substance of her 4-minute speech, SC tells us she was not given any direction on what to include or cut in her speech — even after Saturday’s assassination attempt of DT. She handed in her speech to the RNC … and it was merely edited a bit for time concerns.

Savannah also notes that she was floored by the amount of security at the RNC … not just at the Fiserv Forum location, but all around Milwaukee — which she says is making it hard to get anywhere in a timely fashion. But, she says it’s worth DT and everyone else being safe.