Heat oven to 375°F. In 10-inch skillet, cook beef over medium-high heat 8 to 10 minutes or until thoroughly cooked, stirring frequently; drain. Add taco seasoning mix, water and soup; mix well. Heat to boiling. Reduce heat to low; simmer 3 minutes. Remove from heat.
Separate dough into 8 biscuits. Cut each biscuit into 8 pieces. Add pieces to beef mixture; stir gently. Spoon mixture into ungreased 13x9-inch pan.
Bake 18 to 23 minutes or until sauce is bubbly and biscuits are golden brown. Sprinkle with cheese. Bake 8 to 10 minutes longer or until cheese is bubbly.
To serve, cut pizza into 8 squares. Top each serving with remaining ingredients.