Preheat your oven to 350F.
Line a baking sheet with parchment paper and spray with cooking spray.
In a small saucepan, combine sauce ingredients and bring to a boil.
Stir over med-high heat. When it starts to boil, reduce heat to low, and simmer for 10 minutes.
Remove from heat, and let cool.
Add chopped veggies and cubed chicken to your baking pan and season with salt and pepper.
Next, pour your sauce over the chicken and veggies and stir to coat evenly.
Bake in the oven for 10 minutes then remove the sheet pan and add pineapple chunks before returning to the oven for 10-20 more minutes or until chicken reaches an internal temperature of 165 degrees.
Remove the sheet pan from the oven and toss once more to coat with sauce.
Serve over cauliflower rice to keep things lower carb or with white rice for a gluten-free meal.