Preheat your oven to 400°F and line a large baking sheet with parchment paper for easy cleanup.
Cut the chicken breast into 1-inch bite-sized cubes and season them evenly with the sea salt and black pepper.
In a small mixing bowl, whisk together the fresh orange juice, orange zest, coconut aminos, rice vinegar, minced ginger, minced garlic, and arrowroot powder until no lumps remain.
Place the chicken cubes in a bowl and toss with 2 tablespoons of the prepared orange sauce, then spread them in a single layer on the baking sheet.
Bake the chicken for 15-18 minutes, or until the internal temperature reaches 165°F and the edges are slightly golden.
While the chicken is baking, heat the sesame oil in a large skillet over medium-high heat and sauté the cauliflower rice and snap peas for 5-7 minutes until tender-crisp.
Pour the remaining orange sauce into a small saucepan and simmer over medium heat for 2-3 minutes until it thickens into a glossy, pourable glaze.
Toss the baked chicken cubes in the thickened orange glaze and serve immediately over the sautéed cauliflower rice, garnished with thinly sliced green onions.