Cook the ground beef in a skillet on medium-high heat until well-done (about 8-11 minutes), breaking into medium size pieces. Drain drippings off meat. Keeping meat in same pan, add salt, pepper, and bacon crumbles, stirring to mix well, heating on medium heat for another 3 minutes. Remove from heat and add half of the cheese, mixing lightly.
Open each pita pocket, spooning 1/4 of the meat mixture inside, top with shredded lettuce, diced tomatoes and remaining cheese. ENJOY!