Cook spaghetti noodles according to package directions. Drain and set aside.

In a large skillet over medium-high heat, add ground beef, diced onions, and bell peppers.

Cook until beef is no longer pink, then drain excess grease.

Stir in taco seasoning until meat is well coated.

Add diced tomatoes with green chilies, chicken broth, and cubed cheese to the skillet.

Reduce heat to low and stir occasionally until cheese has completely melted.

Gently toss the cooked noodles in the mixture.