Tenderloin with Chimichurri and Chickpea Fries

Ingredients

• 2-1/2 pounds Beef Tenderloin, trimmed and tied
• 2 tablespoons Kosher salt
• 1 tablespoon freshly ground black pepper
• 1 tablespoon brown sugar
• 2 teaspoons ancho chile powder
• 1 teaspoon garlic powder
• 1 teaspoon onion powder
• 1 teaspoon dry mustard
• 1 teaspoon dried thyme
• 1/2 teaspoon ground fennel
• 2 tablespoons avocado oil