Cook the bacon. Preheat oven to 400°F. Arrange the bacon strips in a single layer on a parchment-lined baking sheet. Bake for 15 minutes, until crisp. Allow to cool and chop into pieces.
Roast the jalapeños. For a less spicy dip, remove the ribs and seeds. Arrange the halved jalapeños skin-side up on a parchment-lined baking sheet. Broil for 3-4 minutes, until blistered and lightly charred. Allow to cool and chop into pieces.
Preheat oven to 350°F. Line a large baking sheet with parchment paper.
In a large bowl, stir or beat together the cream cheese and yogurt until smooth and combined.
Add the chopped jalapenos, bacon (except 1 tablespoon), green onions (except 1 tablespoon), garlic powder, and salt. Stir until well incorporated.
Add the shredded cheese (except 1 cup). Stir until combined.
Cut the bread bowl. Using a serrated knife, cut down into the loaf about 1 inch from the edge. Cut around the entire circumference of the loaf. Remove the top and using your hands scoop out the middle, leaving a bread bowl 1 to 1½ inches thick on all sides. Cut the top and any discarded bread into pieces for dipping.
Spoon the dip into the bread bowl and smooth the stop. Sprinkle the reserved cheese over top. Transfer the bread bowl to the parchment-lined baking sheet.
Bake for 25 minutes, until hot and melted. Broil for 2-3 minutes, until bubbly and golden on top.
Sprinkle reserved bacon and green onion over top. Serve while hot.
Notes
Storage: Store covered in the refrigerator for up to 3 days. Reheat in the oven at 350°F for 15 minutes.Make it ahead: To make the dip ahead of time, perform steps 1-6 (omitting step 3) up to 2 days in advance. Store the prepared dip in an airtight container in the refrigerator until ready to use. Just before serving, preheat the oven per step 3 and carry on with the recipe from step 7.No bread? Don't let that stop you! You can make this dip in an oven-safe dish instead of a bread bowl. Just follow the directions as written, except instead of spooning the dip into the bread bowl dump it into an oven-safe dish then continue on as directed with smoothing, sprinkling, baking, and broiling.