Preheat oven to 375°F (190°C). Line a baking sheet with parchment paper.
Combine all ingredients in a bowl or on the baking sheet, tossing to coat evenly.
Spread everything on the baking sheet and bake for 45-60 minutes, then increase to 425°F (220°C) and bake for an additional 10-20 minutes until golden and cooked through.
Remove from oven, serve 2 thighs with about 8 pieces of squash per serving, and garnish with parsley if desired.
Notes
Ensure chicken is cooked to an internal temperature of 160°F (71°C) for safety.