Preheat oven to 400 degrees F.
Place the cubed squash in a large bowl.
Drizzle with the olive oil, maple syrup, chili powder, salt and pepper. Toss to coat.
Transfer the squash to a baking sheet and spread out evenly.
Roast for 25 to 30 minutes, stirring with a spatula halfway through, until the squash is tender and golden brown.
Remove and set aside.