Chicken Liver Toast with Spiced Pecans

Name: Chicken Liver Toast with Spiced Pecans
Ingredients: 1 cup pecan halves; 2 tbsp. unsalted butter, melted; ½ tsp. smoked paprika; ½ tsp. sugar; ¼ tsp. cayenne; ¼ tsp. freshly ground black pepper; 2 tsp. flaked salt, such as Maldon; 1 lb. chicken livers, cleaned; Kosher salt and freshly ground black pepper, to taste; 2 tbsp. olive oil, plus more for garnish; 1 clove garlic, thinly sliced; ½ small yellow onion, thinly sliced; 2 oz. bourbon; 2 tbsp. unsalted butter; 1 bay leaf; 1 sprig thyme; Country bread, sliced and grilled, for serving; 2 tbsp. roughly chopped parsley; 1 tbsp. roughly chopped mint; 1 tbsp. grated lemon zest; 3 tbsp. balsamic vinegar, preferably aged