Season the chicken breast evenly on both sides with dried oregano, garlic powder, sea salt, and black pepper.
Heat a cast-iron skillet or grill pan over medium-high heat, then sear the chicken for 6 to 8 minutes per side until fully cooked and golden.
Transfer the chicken to a cutting board and let it rest for 5 minutes before slicing it into thin strips.
Prepare the vegetables by dicing the cucumber into half-moons, halving the cherry tomatoes, and slicing the red bell pepper into thin strips.
Spread the hummus onto one side of a large plate or shallow bowl, creating a smooth base with the back of a spoon.
Arrange the sliced chicken, prepared vegetables, Kalamata olives, and crumbled feta cheese in organized sections around the hummus.
In a small bowl, whisk together the extra virgin olive oil and lemon juice, then drizzle it evenly over the vegetables and chicken.
Garnish the platter with freshly chopped parsley and serve immediately.