Preheat the oven to 400 degrees F. Line a baking sheet with parchment paper or grease with cooking spray.
In a small/medium bowl, whisk together the olive oil, lemon juice, lemon zest, shallot, garlic, herbs, and salt.
Place the chicken in a medium bowl along with ½ cup of the lemon herb mixture and toss to combine. Set aside and let the chicken marinate until ready to use.
Place the halved/quartered baby potatoes in a medium bowl and add ¼ cup of the lemon herb mixture. Toss to combine.
Spread the potatoes out on the prepared baking sheet.
Bake in the preheated oven for 15 minutes.
On a plate or dish, add the asparagus and remaining lemon herb dressing. Toss to combine and set aside.
After 15 minutes, move the potatoes to one end of the baking sheet.
Add the marinated chicken to the middle and the asparagus to the other end.
Bake in the oven for 25 more minutes.
Serve and enjoy!