Preheat the oven to 400 degrees F.
Add chicken and mushrooms to large sheet pan and toss with 1 tbsp of olive oil and 2 tbsp of pesto
Bake in oven for 10 minutes. Remove from oven and remove excess liquid.
Add remaining vegetables and the rest of the pesto. Toss to combine, then bake another 10 minutes until chicken is fully cooked.
Adapted from: The Girl on Bloor