Seitan and Sweet Pepper Skewers With Herb-Roasted Potatoes

Ingredients

• 2 lbs. red bliss or small golden potatoes, cut into 1-inch chunks
• 1/4 cup olive oil
• 2 tsp. freshly chopped rosemary
• 2 tsp. freshly chopped thyme
• 1 Tbsp. freshly chopped parsley
• 1 1/2 Tbsp. salt
• 2 tsp. cracked black pepper
• 1 1/2 lbs. prepared seitan
• 2 large onions, cut into 3/4-inch dice
• 2 yellow peppers, seeded and cut into 3/4-inch dice
• 2 red peppers, seeded and cut into 3/4-inch dice
• 2 green peppers, seeded and cut into 3/4-inch dice
• 1 lb. whole crimini mushrooms
• 10 garlic-herb or bamboo skewers
• 1 cup olive oil
• 1 Tbsp. freshly chopped garlic
• 3 Tbsp. balsamic vinegar
• 2 tsp. salt