Preheat the Oven:
Preheat your oven to 400°F (200°C). Line a baking sheet with parchment paper or foil for easy cleanup.
Season the Chicken Bites:
In a large mixing bowl, toss the chicken bites with olive oil, garlic powder, smoked paprika, onion powder, salt, and pepper.
Spread the seasoned chicken bites evenly on one side of the baking sheet.
Prepare the Broccoli:
In another bowl, toss the broccoli florets with olive oil, garlic powder, salt, and pepper.
Arrange the broccoli on the other side of the baking sheet.
Bake the Chicken and Broccoli:
Bake for 20-25 minutes, flipping the chicken halfway through, until the chicken bites are cooked through (165°F internal temperature) and the broccoli is tender with slightly crispy edges.
Make the Mashed Potatoes:
While the chicken and broccoli bake, boil the cubed potatoes in a large pot of salted water until fork-tender (about 15 minutes).
Drain the potatoes and return them to the pot. Add the butter and milk, mashing until smooth and creamy. Season with salt and pepper to taste.
Serve:
Plate the chicken bites, roasted broccoli, and creamy mashed potatoes together. Serve warm for a complete, delicious meal.