In a small nonstick skillet, heat oil over medium-high heat. Add vegetables; cook and stir until tender. Remove from pan; keep warm. , Add egg substitute and pepper to same skillet; cook and stir over medium heat until eggs are thickened and no liquid egg remains. Remove from heat., Spoon vegetable mixture and scrambled eggs across center of each tortilla; top with cheese, salsa and sour cream. Fold bottom and sides of tortilla over filling and roll up.