Preheat oven to 400°F and line a large sheet pan with parchment paper.
Peel and dice the sweet potatoes into 1-inch cubes and place them on the pan.
Toss sweet potatoes with 0.5 tbsp olive oil, salt, and pepper, then roast for 15 minutes.
While potatoes roast, whisk together honey, tamari, minced garlic, red pepper flakes, and remaining 1 tbsp olive oil in a small bowl.
Cut chicken breast into bite-sized pieces and trim the woody ends off the asparagus.
Remove the pan from the oven, push potatoes to one side, and add chicken and asparagus.
Drizzle the honey-garlic glaze over the chicken and asparagus, tossing to coat everything evenly.
Return the pan to the oven and roast for another 12-15 minutes until the chicken is cooked through and the glaze is bubbly.