Herb-Roasted Vegetables

1 teaspoon olive oil
2 teaspoons garlic powder
1 teaspoon dried thyme
1 teaspoon dried rosemary
1 teaspoon dried marjoram
1/4 teaspoon dried oregano
1/4 teaspoon salt
1/4 teaspoon ground black pepper
1 Large Summer Squash, 2 Zuccini squash, 1 Med Sweet Potato (all cut into pieces)

Sweet and spicy sausage rounds

1lb Kielbasa sausage, cut into 1/4-inch-thick rounds
2/3 cup blackberry jam
1/3 cup steak sauce
1 tablespoon yellow mustard
1/2 teaspoon ground allspice