01 -  In a large bowl, whisk together olive oil, Dijon mustard, balsamic vinegar, garlic powder, thyme, oregano, smoked paprika, salt, and black pepper until fully blended. 
 02 -  Add chicken thighs, baby potatoes, broccoli florets, bell pepper slices, and red onion wedges to the bowl. Toss thoroughly to ensure all pieces are well coated with the marinade. 
 03 -  Pour 1/4 cup water into the Instant Pot. Transfer the coated chicken and vegetables into the pot. Secure the lid, set to Manual high pressure, and cook for 10 minutes. Quick-release the pressure, then switch to Sauté and simmer for 3 to 5 minutes to reduce excess liquid, if desired. 
 04 -  Preheat the air fryer to 375°F. Arrange the chicken and vegetables in a single layer in the air fryer basket, working in batches if needed. Air fry for 18 to 20 minutes, shaking the basket halfway through, until the chicken is cooked through and the vegetables are tender. 
 05 -  Transfer the hot chicken and vegetables to a platter. Garnish with fresh parsley and lemon wedges before serving.