Pat the chicken breast dry with a paper towel and season both sides evenly with sea salt and black pepper.
In a small glass bowl, whisk together the naartjie juice, naartjie zest, honey, tamari, grated fresh ginger, and minced garlic to create the glaze.
Heat the avocado oil in a medium skillet over medium-high heat until shimmering.
Place the chicken in the skillet and sear for 5 to 6 minutes per side until the exterior is golden brown and the internal temperature reaches 165°F.
During the final 2 minutes of cooking, pour the naartjie glaze into the skillet, allowing it to bubble and reduce until it reaches a sticky, syrupy consistency that coats the chicken.
While the chicken finishes, steam the baby bok choy in a separate pot for 3 minutes until the leaves are wilted and the stems are crisp-tender.
Slice the chicken and serve it over the warm cooked quinoa, drizzling any remaining caramelized glaze from the pan over the top.