Cook the chickpea pasta in boiling water according to package instructions, then drain and set aside.
Heat the olive oil in a large skillet over medium-high heat.
Season the beef strips with sea salt, black pepper, and smoked paprika, then sear in the skillet until browned.
Remove the beef from the skillet and set aside on a plate.
In the same skillet, add the diced yellow onion and sliced cremini mushrooms, sautéing until the vegetables are tender and golden.
Stir in the minced garlic and cook for 30 seconds until fragrant.
Pour in the beef broth and Dijon mustard, using a wooden spoon to scrape up any browned bits from the bottom of the pan.
Reduce the heat to low and stir in the Greek yogurt until the sauce is smooth and creamy.
Return the beef and any accumulated juices to the skillet, tossing to coat in the sauce until heated through.
Serve the beef and mushroom mixture over the cooked chickpea pasta and garnish with freshly chopped parsley.