Preheat your oven to 400°F (200°C) and line a small baking sheet with parchment paper for easy cleanup.
Slice the zucchini into half-moons, chop the red bell pepper into bite-sized pieces, and thinly slice the red onion.
Toss the vegetables on the baking sheet with half of the olive oil, half of the sea salt, and half of the dried oregano.
Roast the vegetables for 15 to 20 minutes until they are tender and show slight caramelized edges.
While the vegetables roast, season the chicken breast with the remaining olive oil, salt, pepper, and oregano.
Grill the chicken over medium-high heat for 6 to 7 minutes per side until the internal temperature reaches 165°F.
Spread the hummus in a thick layer on a serving plate or shallow bowl.
Slice the grilled chicken and arrange it over the hummus alongside the roasted vegetables.
Finish the platter with a bright squeeze of fresh lemon juice over the chicken and vegetables before serving.