Marinate the chicken: Whisk together the balsamic vinegar, olive oil, honey, Dijon, and seasoning. Add the chicken breasts and toss to coat. Let this marinate for at least 30 minutes.
Cook the Orzo: Boil the orzo in salted water until tender, then drain. Stir in the pesto, a squeeze of lemon juice, and salt and pepper to taste. Set aside.
Make the Cucumber Caprese Salad: Combine the tomatoes, cucumber, and mozzarella pearls in a bowl. Drizzle with a little olive oil and a squeeze of lemon juice, then season with a pinch of salt and toss to combine.
Cook the Chicken: Remove the chicken from the marinade, letting any excess drip off. Sear in a skillet over medium heat for about 4-5 minutes per side, or until cooked through and the internal temperature reaches 165°F. Let rest for 5 minutes before slicing.
Assemble: Divide the pesto orzo between two bowls and add the cucumber caprese salad and sliced chicken. Garnish with fresh basil and an optional drizzle of balsamic glaze.