Preheat the oven to 400°F. Line a baking sheet with parchment paper.
In a large skillet over medium heat, cook the ground beef until browned, breaking it into small crumbles as it cooks. Drain any excess grease.
Stir in the hamburger seasoning and onion powder.
Remove from heat and allow the beef to cool for 5 to 10 minutes.
Roll the pizza dough out on the prepared baking sheet into roughly a 10×15-inch rectangle.
Spread 1 cup shredded cheese over the dough, leaving about 1 inch of space around the edges.
Top with cooled ground beef, keeping the layer thin and even.
Sprinkle the crumbled bacon over the beef.
Scatter the diced jalapeños evenly across the filling.
Top with the remaining shredded cheese.
Starting with the long side, roll the dough tightly into a log. Pinch the seam and ends closed and place the roll seam-side down on the baking sheet.
In a small bowl, mix butter, mustard, paprika, salt, black pepper, cayenne pepper, and crushed red pepper flakes.
Brush most of the cowboy butter over the top of the dough, reserving the rest for after baking.
Bake for 20 to 25 minutes, or until the crust is golden brown.
After baking, brush the bread with the remaining cowboy butter and sprinkle with parsley.
Allow the bread to rest for 10 minutes before slicing.
Slice with a serrated knife and serve warm.