Rinse the quinoa under cold water, then combine with 0.5 cup water in a small pot, bring to a boil, cover, and simmer for 15 minutes until fluffy.
Pat the chicken breast dry and season both sides evenly with the sea salt, black pepper, garlic powder, and dried oregano.
Heat 1 tsp of olive oil in a medium skillet over medium-high heat and sear the chicken for 5-7 minutes per side until the exterior is golden and the internal temperature reaches 165 degrees.
While the chicken cooks, dice the cucumber and halve the cherry tomatoes.
In a small jar or bowl, whisk together the remaining 1 tsp of olive oil, lemon juice, and chopped fresh parsley to create a zesty dressing.
Slice the rested chicken into strips and assemble the bowl by layering the quinoa, fresh vegetables, and chicken, then drizzling the dressing over the top.