COOK chicken in hot oil in large nonstick skillet on medium-high heat 7 to 8 min. or until chicken is cooked through (170°F), stirring occasionally.
STIR in pasta, broth and water; bring to boil. Reduce heat to low; cover. Simmer 15 min., stirring occasionally. Add broccoli; simmer an additional 5 min., stirring occasionally. Remove from heat.
ADD Cheez Whiz; stir until Cheez Whiz is completely melted and mixture is well blended.