You are not at risk. Hep c must enter your blood stream.
It is exceedingly unlikely the pizza cook got blood on the pizza. Cooking would kill any virus. The acid in your stomach would digest the virus if any was present. There is no way it could enter your blood stream in this manner.
What you have discribed is not listed as a means of transmission of hepatitis c by the CDC.
The most common way to contract hep c is by sharing IV drug needles with an infected person or receiving a blood transfusion prior to 1990 when a test for antibodies was found and the blood supply was secured. There are other less common ways to contract hep c like being born to a mother who has hep c or participating in rough sex with someone infected with hep c.
Let me redo this question I recived food from a restarant and I know that one of the people that works there have hep c and he was the one cutting the pizzas am I at risk of getting it if he cut his self and blood got on my pizza, also in addition I have a bleeding ulcer will that increase my risk of getting the virus?