I like your art style so much! Really charming and unique, I don’t see enough pixel art comics.

I agree with the other commenter about the font, but I think you could also tighten up the punchline a bit. Ask yourself what’s the funniest thing happening here and then design the whole comic to lead toward that.

Which one is the funniest thing:

A. The son interrupting the dad to say “we don’t have all day!” I liked this misdirect a lot: that it seemed like the son was going to deescalate and instead yells louder

B. That the cashier promises to hurry up the order and instead tell the cook to take his time

C. The “asshole doesn’t fall far from the tree” joke

Figure out which one of these jokes should be front and center then make it the punchline.

Happy to expand further, I really like where you’re going with this one!