Preheat your oven to 400°F and line a large baking sheet with parchment paper.
Toss the broccoli florets, sliced red bell pepper, and snap peas with avocado oil, sea salt, and black pepper on the prepared sheet.
Roast the vegetables for 15-18 minutes until they are tender and show light golden-brown charred edges.
While the vegetables roast, whisk together the tamari, honey, sesame oil, finely minced fresh ginger, and minced garlic in a small bowl to create the teriyaki glaze.
Season the chicken breast with a tiny pinch of salt and sear in a hot skillet over medium-high heat for 6-7 minutes per side until the internal temperature reaches 165°F.
Reduce the skillet heat to low and pour the teriyaki sauce over the chicken, tossing frequently for 1-2 minutes until the sauce reduces into a thick, glossy glaze.
Slice the chicken into strips and serve immediately alongside the roasted vegetable medley.