1. Strange New Worlds is not 40% comic relief.
2. The style of Strange New Worlds compliments the style of The Original Series, which famously featured episodes like "The Trouble With Tribbles," "Shore Leave," "A Piece of the Action," and other light-hearted pieces.
3. You are projecting your memory of Carol Kane's other characters onto Pelia. While Kane is clearly giving a more light-hearted performance, her character is not actually comedic. She doesn't tell jokes and the performance is not over-the-top slapstick or broadly-drawn in the manner of, say, Mariner on Lower Decks. Having a raspy, Eastern European-accented voice does not actually make her Smika from Taxi.