Line two cookie sheets with parchment paper.
Cream the butter, granulated sugar, and brown sugar in a stand mixer on medium speed until light and fluffy, about 3 to 4 minutes.
Add the vanilla bean paste. Beat on low just until incorporated, about 15 seconds.
Gradually add the flour, about 1 cup at a time, and beat on low, just until incorporated. Add the chocolate chunks and chopped Marcona almonds. If necessary, knead the dough on a smooth surface to ensure the flour, chocolate, and almonds are evenly distributed throughout the cookie dough,
Divide the cookie dough in half. Place one half on a piece of plastic. Roll into a log about 6-inhes log and a few inches in diameter. Wrap completely in the plastic and refrigerate for several hours. I like to place the logs in round drinking glasses, so the log takes the shape of the glass and does not have any edges that can flatten on a refrigerator shelf.
Preheat the oven to 350 degrees F.
Remove one log of cookie dough from the refrigerator. Unwrap and place the dough on a cutting board and brush the sides of dough with the beaten egg. Roll the dough in turbinado sugar. Cut into 1/2-inch thick rounds. Place the rounds on the parchment, 9 to a cookie sheet. I use the bottom of a flat bottomed drinking glass to lightly press the cookies down. I use my fingers to shape the cookies into perfect round circles, if not perfect when cutting. Sprinkle the cookies with sea salt.
Bake 12 to 15 minutes or until the edges and tops begin to brown.