Combine first 7 ingredients. Place a small nonstick skillet coated with cooking spray over medium-high heat until hot. Add egg mixture, and cook, without stirring, until egg mixture begins to set on bottom. Draw a spatula across bottom of pan to form large curds. Continue cooking until egg mixture is thick but still moist; do not stir constantly.
Place the tortilla on a microwave-safe plate. Spread cream cheese over tortilla, and microwave at high 15 seconds. Top with egg mixture and salsa, and roll up.