Pat the chicken breast dry with a paper towel and season both sides evenly with sea salt, black pepper, and dried oregano.
Heat 1 teaspoon of the extra virgin olive oil in a medium skillet over medium-high heat.
Add the chicken to the skillet and sear for 6 to 7 minutes per side, or until the internal temperature reaches 165°F and the outside is golden brown.
While the chicken cooks, whisk together the remaining 1 teaspoon of olive oil, lemon juice, and minced garlic in a small bowl to create the dressing.
Place the chopped kale in a large mixing bowl and drizzle with half of the dressing, massaging the leaves with your hands for 1 minute to soften them.
Add the cooked quinoa, halved cherry tomatoes, and diced cucumber to the bowl with the kale and toss to combine.
Slice the cooked chicken into thin strips and place them on top of the quinoa and vegetable mixture.
Drizzle the remaining lemon-herb dressing over the bowl and serve immediately.