Pressure-Cooker Mediterranean Chicken Orzo

Ingredients

• 6 boneless skinless chicken thighs (about 1-1/2 pounds), cut into 1-inch pieces
• 2 cups reduced-sodium chicken broth
• 2 medium tomatoes, chopped
• 1 cup sliced pitted green olives, drained
• 1 cup sliced pitted ripe olives, drained
• 1 large carrot, halved lengthwise and chopped
• 1 small red onion, finely chopped
• 1 tablespoon grated lemon zest
• 3 tablespoons lemon juice
• 2 tablespoons butter
• 1 tablespoon herbes de Provence
• 1 cup uncooked orzo pasta