Season the chicken breast with half of the sea salt, black pepper, and dried oregano.
Heat a grill pan or skillet over medium-high heat and cook the chicken for 6-7 minutes per side until the internal temperature reaches 165°F.
While the chicken cooks, slice the cucumber, halve the cherry tomatoes, and slice the red bell pepper.
Spread the hummus onto one side of a large plate or shallow bowl using the back of a spoon.
Slice the cooked chicken into thin strips and arrange it on the plate next to the hummus.
Add the sliced cucumber, cherry tomatoes, bell peppers, and Kalamata olives to the platter.
Drizzle the extra virgin olive oil and fresh lemon juice over the vegetables and chicken.
Top the entire platter with crumbled feta cheese and the remaining sea salt, black pepper, and oregano before serving.