Pat the cubed chicken breast dry with a paper towel to ensure maximum crispiness.
In a medium bowl, toss the chicken cubes with arrowroot powder, sea salt, and black pepper until evenly coated.
Heat the toasted sesame oil in a large skillet over medium-high heat until shimmering.
Add the chicken to the skillet in a single layer and sear for 5-6 minutes, turning occasionally until golden brown and crispy.
Remove the chicken from the pan and set aside on a plate.
Add the trimmed asparagus to the same skillet and sauté for 3-4 minutes until bright green and tender-crisp.
Stir in the minced garlic and grated ginger, cooking for 30 seconds until the aroma is released.
Pour in the coconut aminos and return the crispy chicken to the pan, tossing for 1 minute until the sauce thickens into a glaze.
Serve the teriyaki chicken and asparagus immediately over the warm steamed white rice.