It would be good to know how old the chicks are. Let's assume they are four weeks old and mostly feathered out already, but your nights are still quite cool.
Go ahead and move them into the coop with food and water and a heat source for just at night. They will probably want to stay in the coop for the first day so these are important.
The next day, the chicks may wander out into the run, so have food and water out there, as well as inside the coop. Once the chicks are spending most of their time in the run, you can remove the food and water from the coop.
The chicks may need to be taught to go back inside at night. The coop will look different to them from outside so it will seem like a strange place to them, especially if it's darker inside the coop than outside. A night light inside the coop is a big help for these first few days while the chicks are learning to go in at night.
If they don't get it right away, you may need to get inside the coop and coax them in using their favorite treat. Resist the urge to chase them down and stuff them in. It just makes the process more stressful than it needs to be, and it actually takes longer for them to learn.