"Create a recipe for a roasted chicken legs and vegetable medley using the provided ingredients: 4 chicken legs, 1 small butternut squash (peeled and cubed), 1 medium eggplant (diced), 2 medium potatoes (cubed), 1 large onion (sliced), 2 medium tomatoes (chopped), 2 bell peppers (sliced), 2 celery stalks (chopped), 3 tbsp olive oil, 2 tsp dried thyme, 1 tsp smoked paprika, 4 garlic cloves (minced), salt and pepper to taste, and fresh parsley for garnish. Include cooking instructions and approximate cooking times. Use imperial units."