Pat the chicken breast dry with a paper towel and season both sides evenly with the sea salt, black pepper, and garlic powder.
Heat the olive oil in a small skillet over medium-high heat until the oil is shimmering but not smoking.
Place the chicken in the skillet and sear for 5 to 7 minutes without moving it to ensure a golden-brown crust develops.
Flip the chicken and cook for another 4 to 5 minutes until the internal temperature reaches 165°F.
Remove the chicken from the pan and let it rest on a cutting board for at least 5 minutes to keep the juices inside.
In the same skillet, add the broccoli florets and a tablespoon of water; cover with a lid and steam for 3 minutes until tender-crisp.
Slice the rested chicken into thin strips against the grain.
Assemble the bowl by placing the warm quinoa at the base, then topping with the steamed broccoli and sliced chicken.
Finish the bowl by adding the avocado slices and drizzling with coconut aminos and fresh lemon juice.