Heirloom Tomato Pie - Miz En Place

Ingredients

• 3 pounds assorted medium to large heirloom tomatoes
• 1 tsp kosher salt (divided)
• 6 thick-cut bacon slices (diced)
• 2 large shallots (chopped)
• 2 garlic cloves (finely chopped)
• 6 ounces aged extra-sharp white Cheddar cheese (grated)
• 1/2 cup mayonnaise
• 1/2 cup fresh basil (chopped )
• 1/4 cup fresh chives (thinly sliced )
• 1 tbsp Dijon mustard
• 1 large egg
• Fresh basil leaves
• Minced fresh chives
• 2-1/2 cups all-purpose flour
• 3 ounces Parmigiano-Reggiano cheese (finely shredded)
• 1/2 tsp kosher salt
• 1/4 tsp black pepper
• 3/4 cup cold unsalted butter (cubed)
• 1/4 cup cold solid vegetable shortening (cubed)
• 6 tbsp buttermilk