Chocolate Pear Tart

Name: Chocolate Pear Tart
Ingredients: 8 tablespoons unsalted butter (1 stick, room temperature, plus more for pan); 1 cup whole almonds (blanched); 3/4 cup granulated sugar; 3 large eggs; 1/3 cup unsweetened cocoa powder; 1 teaspoon pure vanilla extract; 1/2 teaspoon salt; 1/4 teaspoon almond extract (optional); 1 1/2 pounds pears (firm and ripe, 3 bartlett pears); 1/2 whole lemon; 2 tablespoons apple jelly