Heat olive oil in a large skillet over medium-high heat.
Add ground beef to the skillet and cook until thoroughly browned, breaking it into small crumbles with a spatula.
Drain any excess grease from the pan.
Add the sliced onions and bell peppers to the beef. Sauté for 6 to 8 minutes until the vegetables are tender-crisp and onions are translucent.
Stir in the minced garlic, salt, black pepper, and Worcestershire sauce. Cook for an additional 2 minutes until fragrant.
Divide the beef and vegetable mixture equally into four airtight meal prep containers.
Top each portion with one slice of provolone cheese while the beef is still hot to allow for natural melting.
Allow the containers to cool to room temperature before sealing with lids. Store in the refrigerator for up to 4 days.