Collins said the team sat 45 minutes at the airport late last night and got into Chicago past 4 a.m.
"I'm really concerned with tonight, because of the weekend series, all the hoopla, all the excitement, all the adrenaline and an absolutely brutal trip in here last night," he said. "Those guys are absolutely, I'm sure, out of gas. We're going to see if we can rise the energy a little bit."
The Mets currently sit 3 1/2 games back of the division-leading Nationals and will play the Cubs twice before the All-Star break.
"We are where we are, and I'm very happy with it," Collins said. "We are where we are because of the way we prepared. We aren't going to let yesterday's game or the chicken or anything else stay in the way of getting to play the next series. You can't do it. This is where you can have a real hiccup, and we're going to try to avoid that."