Spray a large skillet with cooking spray. Put the skillet on medium-high heat.
Add one tablespoon of canola oil. Add the chopped chicken to the skillet.
Sprinkle pepper on the chopped chicken tenders.
Stir to brown the chicken for about 5 minutes. Transfer the chicken to a bowl.
Add the remaining canola oil to the skillet. Add the broccoli, onion and mushrooms to the skillet. Stir.
Cook for three minutes, stirring constantly. Lower the heat to medium-low.
Stir in the sauce until it is blended with the veggies. Lower the heat to a simmer. Cook for 3-4 minutes.
As needed add a tablespoon of water at a time to thin the sauce.
Add chopped chicken to the skillet. Continue to cook on medium-low for an additional minute.
Leftovers can be stored in the refrigerator for 2-3 days.
Enjoy!