Season the chicken breast evenly on both sides with sea salt, black pepper, and dried oregano.
Heat the olive oil in a medium skillet over medium-high heat.
Add the chicken to the skillet and sear for 5-7 minutes per side until golden brown and cooked through.
Remove the chicken from the heat, let it rest for 3 minutes, then slice into thin strips.
Place the fluffy cooked quinoa in the center of a serving bowl as the base.
Arrange the sliced chicken, diced cucumber, halved cherry tomatoes, and thinly sliced red onion in sections over the quinoa.
Top the bowl with a dollop of hummus and a sprinkle of crumbled feta cheese.
Finish by drizzling the fresh lemon juice over the entire bowl before serving.