Rub the chicken with olive oil, garlic powder, paprika, Italian seasoning, salt, and black pepper.
Heat a large skillet over medium-high heat.
Cook the chicken for 6 to 7 minutes per side, or until the internal temperature reaches 165°F (74°C).
Let it rest for 5 minutes, then slice.
Lightly steam or roast the broccoli, carrots, bell pepper, and zucchini until they're tender-crisp.
Whisk together the olive oil, lemon juice, Dijon mustard, honey, garlic powder, salt, and black pepper until smooth.
Divide the rice among serving bowls.
Arrange the cooked vegetables, cucumber, tomatoes, and sliced chicken on top.
Drizzle with the dressing and sprinkle with chopped parsley.
Serve immediately.